diff --git a/AUTHORS b/AUTHORS index 03904ff55..9f621b990 100644 --- a/AUTHORS +++ b/AUTHORS @@ -6,6 +6,7 @@ Alexei Sholik Andreas Ericsson Ankur Sethi Ben Noordhuis +Ben Straub Benjamin C Meyer Brian Lopez Carlos Martín Nieto diff --git a/include/git2.h b/include/git2.h index d75387318..2630709e2 100644 --- a/include/git2.h +++ b/include/git2.h @@ -25,6 +25,7 @@ #include "git2/merge.h" #include "git2/refs.h" #include "git2/reflog.h" +#include "git2/revparse.h" #include "git2/object.h" #include "git2/blob.h" diff --git a/include/git2/revparse.h b/include/git2/revparse.h new file mode 100644 index 000000000..4567027e5 --- /dev/null +++ b/include/git2/revparse.h @@ -0,0 +1,36 @@ +/* + * Copyright (C) 2012 the libgit2 contributors + * + * This file is part of libgit2, distributed under the GNU GPL v2 with + * a Linking Exception. For full terms see the included COPYING file. + */ +#ifndef INCLUDE_git_revparse_h__ +#define INCLUDE_git_revparse_h__ + +#include "common.h" +#include "types.h" + + +/** + * @file git2/revparse.h + * @brief Git revision parsing routines + * @defgroup git_revparse Git revision parsing routines + * @ingroup Git + * @{ + */ +GIT_BEGIN_DECL + +/** + * Find an object, as specified by a revision string. See `man gitrevisions`, or the documentation + * for `git rev-parse` for information on the syntax accepted. + * + * @param out pointer to output object + * @param repo the repository to search in + * @param spec the textual specification for an object + * @return on success, GIT_ERROR otherwise (use git_error_last for information about the error) + */ +GIT_EXTERN(int) git_revparse_single(git_object **out, git_repository *repo, const char *spec); + +/** @} */ +GIT_END_DECL +#endif diff --git a/src/date.c b/src/date.c new file mode 100644 index 000000000..658b09eb5 --- /dev/null +++ b/src/date.c @@ -0,0 +1,876 @@ +/* + * GIT - The information manager from hell + * + * Copyright (C) Linus Torvalds, 2005 + */ + +#include "common.h" + +#ifndef GIT_WIN32 +#include +#endif + +#include "util.h" +#include "cache.h" +#include "posix.h" + +#include +#include + +typedef enum { + DATE_NORMAL = 0, + DATE_RELATIVE, + DATE_SHORT, + DATE_LOCAL, + DATE_ISO8601, + DATE_RFC2822, + DATE_RAW +} date_mode; + +/* + * This is like mktime, but without normalization of tm_wday and tm_yday. + */ +static git_time_t tm_to_time_t(const struct tm *tm) +{ + static const int mdays[] = { + 0, 31, 59, 90, 120, 151, 181, 212, 243, 273, 304, 334 + }; + int year = tm->tm_year - 70; + int month = tm->tm_mon; + int day = tm->tm_mday; + + if (year < 0 || year > 129) /* algo only works for 1970-2099 */ + return -1; + if (month < 0 || month > 11) /* array bounds */ + return -1; + if (month < 2 || (year + 2) % 4) + day--; + if (tm->tm_hour < 0 || tm->tm_min < 0 || tm->tm_sec < 0) + return -1; + return (year * 365 + (year + 1) / 4 + mdays[month] + day) * 24*60*60UL + + tm->tm_hour * 60*60 + tm->tm_min * 60 + tm->tm_sec; +} + +static const char *month_names[] = { + "January", "February", "March", "April", "May", "June", + "July", "August", "September", "October", "November", "December" +}; + +static const char *weekday_names[] = { + "Sundays", "Mondays", "Tuesdays", "Wednesdays", "Thursdays", "Fridays", "Saturdays" +}; + + + +/* + * Check these. And note how it doesn't do the summer-time conversion. + * + * In my world, it's always summer, and things are probably a bit off + * in other ways too. + */ +static const struct { + const char *name; + int offset; + int dst; +} timezone_names[] = { + { "IDLW", -12, 0, }, /* International Date Line West */ + { "NT", -11, 0, }, /* Nome */ + { "CAT", -10, 0, }, /* Central Alaska */ + { "HST", -10, 0, }, /* Hawaii Standard */ + { "HDT", -10, 1, }, /* Hawaii Daylight */ + { "YST", -9, 0, }, /* Yukon Standard */ + { "YDT", -9, 1, }, /* Yukon Daylight */ + { "PST", -8, 0, }, /* Pacific Standard */ + { "PDT", -8, 1, }, /* Pacific Daylight */ + { "MST", -7, 0, }, /* Mountain Standard */ + { "MDT", -7, 1, }, /* Mountain Daylight */ + { "CST", -6, 0, }, /* Central Standard */ + { "CDT", -6, 1, }, /* Central Daylight */ + { "EST", -5, 0, }, /* Eastern Standard */ + { "EDT", -5, 1, }, /* Eastern Daylight */ + { "AST", -3, 0, }, /* Atlantic Standard */ + { "ADT", -3, 1, }, /* Atlantic Daylight */ + { "WAT", -1, 0, }, /* West Africa */ + + { "GMT", 0, 0, }, /* Greenwich Mean */ + { "UTC", 0, 0, }, /* Universal (Coordinated) */ + { "Z", 0, 0, }, /* Zulu, alias for UTC */ + + { "WET", 0, 0, }, /* Western European */ + { "BST", 0, 1, }, /* British Summer */ + { "CET", +1, 0, }, /* Central European */ + { "MET", +1, 0, }, /* Middle European */ + { "MEWT", +1, 0, }, /* Middle European Winter */ + { "MEST", +1, 1, }, /* Middle European Summer */ + { "CEST", +1, 1, }, /* Central European Summer */ + { "MESZ", +1, 1, }, /* Middle European Summer */ + { "FWT", +1, 0, }, /* French Winter */ + { "FST", +1, 1, }, /* French Summer */ + { "EET", +2, 0, }, /* Eastern Europe, USSR Zone 1 */ + { "EEST", +2, 1, }, /* Eastern European Daylight */ + { "WAST", +7, 0, }, /* West Australian Standard */ + { "WADT", +7, 1, }, /* West Australian Daylight */ + { "CCT", +8, 0, }, /* China Coast, USSR Zone 7 */ + { "JST", +9, 0, }, /* Japan Standard, USSR Zone 8 */ + { "EAST", +10, 0, }, /* Eastern Australian Standard */ + { "EADT", +10, 1, }, /* Eastern Australian Daylight */ + { "GST", +10, 0, }, /* Guam Standard, USSR Zone 9 */ + { "NZT", +12, 0, }, /* New Zealand */ + { "NZST", +12, 0, }, /* New Zealand Standard */ + { "NZDT", +12, 1, }, /* New Zealand Daylight */ + { "IDLE", +12, 0, }, /* International Date Line East */ +}; + +static int match_string(const char *date, const char *str) +{ + int i = 0; + + for (i = 0; *date; date++, str++, i++) { + if (*date == *str) + continue; + if (toupper(*date) == toupper(*str)) + continue; + if (!isalnum(*date)) + break; + return 0; + } + return i; +} + +static int skip_alpha(const char *date) +{ + int i = 0; + do { + i++; + } while (isalpha(date[i])); + return i; +} + +/* +* Parse month, weekday, or timezone name +*/ +static int match_alpha(const char *date, struct tm *tm, int *offset) +{ + unsigned int i; + + for (i = 0; i < 12; i++) { + int match = match_string(date, month_names[i]); + if (match >= 3) { + tm->tm_mon = i; + return match; + } + } + + for (i = 0; i < 7; i++) { + int match = match_string(date, weekday_names[i]); + if (match >= 3) { + tm->tm_wday = i; + return match; + } + } + + for (i = 0; i < ARRAY_SIZE(timezone_names); i++) { + int match = match_string(date, timezone_names[i].name); + if (match >= 3 || match == (int)strlen(timezone_names[i].name)) { + int off = timezone_names[i].offset; + + /* This is bogus, but we like summer */ + off += timezone_names[i].dst; + + /* Only use the tz name offset if we don't have anything better */ + if (*offset == -1) + *offset = 60*off; + + return match; + } + } + + if (match_string(date, "PM") == 2) { + tm->tm_hour = (tm->tm_hour % 12) + 12; + return 2; + } + + if (match_string(date, "AM") == 2) { + tm->tm_hour = (tm->tm_hour % 12) + 0; + return 2; + } + + /* BAD CRAP */ + return skip_alpha(date); +} + +static int is_date(int year, int month, int day, struct tm *now_tm, time_t now, struct tm *tm) +{ + if (month > 0 && month < 13 && day > 0 && day < 32) { + struct tm check = *tm; + struct tm *r = (now_tm ? &check : tm); + time_t specified; + + r->tm_mon = month - 1; + r->tm_mday = day; + if (year == -1) { + if (!now_tm) + return 1; + r->tm_year = now_tm->tm_year; + } + else if (year >= 1970 && year < 2100) + r->tm_year = year - 1900; + else if (year > 70 && year < 100) + r->tm_year = year; + else if (year < 38) + r->tm_year = year + 100; + else + return 0; + if (!now_tm) + return 1; + + specified = tm_to_time_t(r); + + /* Be it commit time or author time, it does not make + * sense to specify timestamp way into the future. Make + * sure it is not later than ten days from now... + */ + if (now + 10*24*3600 < specified) + return 0; + tm->tm_mon = r->tm_mon; + tm->tm_mday = r->tm_mday; + if (year != -1) + tm->tm_year = r->tm_year; + return 1; + } + return 0; +} + +static int match_multi_number(unsigned long num, char c, const char *date, char *end, struct tm *tm) +{ + time_t now; + struct tm now_tm; + struct tm *refuse_future; + long num2, num3; + + num2 = strtol(end+1, &end, 10); + num3 = -1; + if (*end == c && isdigit(end[1])) + num3 = strtol(end+1, &end, 10); + + /* Time? Date? */ + switch (c) { + case ':': + if (num3 < 0) + num3 = 0; + if (num < 25 && num2 >= 0 && num2 < 60 && num3 >= 0 && num3 <= 60) { + tm->tm_hour = num; + tm->tm_min = num2; + tm->tm_sec = num3; + break; + } + return 0; + + case '-': + case '/': + case '.': + now = time(NULL); + refuse_future = NULL; + if (p_gmtime_r(&now, &now_tm)) + refuse_future = &now_tm; + + if (num > 70) { + /* yyyy-mm-dd? */ + if (is_date(num, num2, num3, refuse_future, now, tm)) + break; + /* yyyy-dd-mm? */ + if (is_date(num, num3, num2, refuse_future, now, tm)) + break; + } + /* Our eastern European friends say dd.mm.yy[yy] + * is the norm there, so giving precedence to + * mm/dd/yy[yy] form only when separator is not '.' + */ + if (c != '.' && + is_date(num3, num, num2, refuse_future, now, tm)) + break; + /* European dd.mm.yy[yy] or funny US dd/mm/yy[yy] */ + if (is_date(num3, num2, num, refuse_future, now, tm)) + break; + /* Funny European mm.dd.yy */ + if (c == '.' && + is_date(num3, num, num2, refuse_future, now, tm)) + break; + return 0; + } + return end - date; +} + +/* + * Have we filled in any part of the time/date yet? + * We just do a binary 'and' to see if the sign bit + * is set in all the values. + */ +static int nodate(struct tm *tm) +{ + return (tm->tm_year & + tm->tm_mon & + tm->tm_mday & + tm->tm_hour & + tm->tm_min & + tm->tm_sec) < 0; +} + +/* + * We've seen a digit. Time? Year? Date? + */ +static int match_digit(const char *date, struct tm *tm, int *offset, int *tm_gmt) +{ + int n; + char *end; + unsigned long num; + + num = strtoul(date, &end, 10); + + /* + * Seconds since 1970? We trigger on that for any numbers with + * more than 8 digits. This is because we don't want to rule out + * numbers like 20070606 as a YYYYMMDD date. + */ + if (num >= 100000000 && nodate(tm)) { + time_t time = num; + if (p_gmtime_r(&time, tm)) { + *tm_gmt = 1; + return end - date; + } + } + + /* + * Check for special formats: num[-.:/]num[same]num + */ + switch (*end) { + case ':': + case '.': + case '/': + case '-': + if (isdigit(end[1])) { + int match = match_multi_number(num, *end, date, end, tm); + if (match) + return match; + } + } + + /* + * None of the special formats? Try to guess what + * the number meant. We use the number of digits + * to make a more educated guess.. + */ + n = 0; + do { + n++; + } while (isdigit(date[n])); + + /* Four-digit year or a timezone? */ + if (n == 4) { + if (num <= 1400 && *offset == -1) { + unsigned int minutes = num % 100; + unsigned int hours = num / 100; + *offset = hours*60 + minutes; + } else if (num > 1900 && num < 2100) + tm->tm_year = num - 1900; + return n; + } + + /* + * Ignore lots of numerals. We took care of 4-digit years above. + * Days or months must be one or two digits. + */ + if (n > 2) + return n; + + /* + * NOTE! We will give precedence to day-of-month over month or + * year numbers in the 1-12 range. So 05 is always "mday 5", + * unless we already have a mday.. + * + * IOW, 01 Apr 05 parses as "April 1st, 2005". + */ + if (num > 0 && num < 32 && tm->tm_mday < 0) { + tm->tm_mday = num; + return n; + } + + /* Two-digit year? */ + if (n == 2 && tm->tm_year < 0) { + if (num < 10 && tm->tm_mday >= 0) { + tm->tm_year = num + 100; + return n; + } + if (num >= 70) { + tm->tm_year = num; + return n; + } + } + + if (num > 0 && num < 13 && tm->tm_mon < 0) + tm->tm_mon = num-1; + + return n; +} + +static int match_tz(const char *date, int *offp) +{ + char *end; + int hour = strtoul(date + 1, &end, 10); + int n = end - (date + 1); + int min = 0; + + if (n == 4) { + /* hhmm */ + min = hour % 100; + hour = hour / 100; + } else if (n != 2) { + min = 99; /* random crap */ + } else if (*end == ':') { + /* hh:mm? */ + min = strtoul(end + 1, &end, 10); + if (end - (date + 1) != 5) + min = 99; /* random crap */ + } /* otherwise we parsed "hh" */ + + /* + * Don't accept any random crap. Even though some places have + * offset larger than 12 hours (e.g. Pacific/Kiritimati is at + * UTC+14), there is something wrong if hour part is much + * larger than that. We might also want to check that the + * minutes are divisible by 15 or something too. (Offset of + * Kathmandu, Nepal is UTC+5:45) + */ + if (min < 60 && hour < 24) { + int offset = hour * 60 + min; + if (*date == '-') + offset = -offset; + *offp = offset; + } + return end - date; +} + +/* + * Parse a string like "0 +0000" as ancient timestamp near epoch, but + * only when it appears not as part of any other string. + */ +static int match_object_header_date(const char *date, git_time_t *timestamp, int *offset) +{ + char *end; + unsigned long stamp; + int ofs; + + if (*date < '0' || '9' <= *date) + return -1; + stamp = strtoul(date, &end, 10); + if (*end != ' ' || stamp == ULONG_MAX || (end[1] != '+' && end[1] != '-')) + return -1; + date = end + 2; + ofs = strtol(date, &end, 10); + if ((*end != '\0' && (*end != '\n')) || end != date + 4) + return -1; + ofs = (ofs / 100) * 60 + (ofs % 100); + if (date[-1] == '-') + ofs = -ofs; + *timestamp = stamp; + *offset = ofs; + return 0; +} + +/* Gr. strptime is crap for this; it doesn't have a way to require RFC2822 + (i.e. English) day/month names, and it doesn't work correctly with %z. */ +static int parse_date_basic(const char *date, git_time_t *timestamp, int *offset) +{ + struct tm tm; + int tm_gmt; + git_time_t dummy_timestamp; + int dummy_offset; + + if (!timestamp) + timestamp = &dummy_timestamp; + if (!offset) + offset = &dummy_offset; + + memset(&tm, 0, sizeof(tm)); + tm.tm_year = -1; + tm.tm_mon = -1; + tm.tm_mday = -1; + tm.tm_isdst = -1; + tm.tm_hour = -1; + tm.tm_min = -1; + tm.tm_sec = -1; + *offset = -1; + tm_gmt = 0; + + if (*date == '@' && + !match_object_header_date(date + 1, timestamp, offset)) + return 0; /* success */ + for (;;) { + int match = 0; + unsigned char c = *date; + + /* Stop at end of string or newline */ + if (!c || c == '\n') + break; + + if (isalpha(c)) + match = match_alpha(date, &tm, offset); + else if (isdigit(c)) + match = match_digit(date, &tm, offset, &tm_gmt); + else if ((c == '-' || c == '+') && isdigit(date[1])) + match = match_tz(date, offset); + + if (!match) { + /* BAD CRAP */ + match = 1; + } + + date += match; + } + + /* mktime uses local timezone */ + *timestamp = tm_to_time_t(&tm); + if (*offset == -1) + *offset = ((time_t)*timestamp - mktime(&tm)) / 60; + + if (*timestamp == (git_time_t)-1) + return -1; + + if (!tm_gmt) + *timestamp -= *offset * 60; + return 0; /* success */ +} + + +/* + * Relative time update (eg "2 days ago"). If we haven't set the time + * yet, we need to set it from current time. + */ +static git_time_t update_tm(struct tm *tm, struct tm *now, unsigned long sec) +{ + time_t n; + + if (tm->tm_mday < 0) + tm->tm_mday = now->tm_mday; + if (tm->tm_mon < 0) + tm->tm_mon = now->tm_mon; + if (tm->tm_year < 0) { + tm->tm_year = now->tm_year; + if (tm->tm_mon > now->tm_mon) + tm->tm_year--; + } + + n = mktime(tm) - sec; + p_localtime_r(&n, tm); + return n; +} + +static void date_now(struct tm *tm, struct tm *now, int *num) +{ + GIT_UNUSED(num); + update_tm(tm, now, 0); +} + +static void date_yesterday(struct tm *tm, struct tm *now, int *num) +{ + GIT_UNUSED(num); + update_tm(tm, now, 24*60*60); +} + +static void date_time(struct tm *tm, struct tm *now, int hour) +{ + if (tm->tm_hour < hour) + date_yesterday(tm, now, NULL); + tm->tm_hour = hour; + tm->tm_min = 0; + tm->tm_sec = 0; +} + +static void date_midnight(struct tm *tm, struct tm *now, int *num) +{ + GIT_UNUSED(num); + date_time(tm, now, 0); +} + +static void date_noon(struct tm *tm, struct tm *now, int *num) +{ + GIT_UNUSED(num); + date_time(tm, now, 12); +} + +static void date_tea(struct tm *tm, struct tm *now, int *num) +{ + GIT_UNUSED(num); + date_time(tm, now, 17); +} + +static void date_pm(struct tm *tm, struct tm *now, int *num) +{ + int hour, n = *num; + *num = 0; + GIT_UNUSED(now); + + hour = tm->tm_hour; + if (n) { + hour = n; + tm->tm_min = 0; + tm->tm_sec = 0; + } + tm->tm_hour = (hour % 12) + 12; +} + +static void date_am(struct tm *tm, struct tm *now, int *num) +{ + int hour, n = *num; + *num = 0; + GIT_UNUSED(now); + + hour = tm->tm_hour; + if (n) { + hour = n; + tm->tm_min = 0; + tm->tm_sec = 0; + } + tm->tm_hour = (hour % 12); +} + +static void date_never(struct tm *tm, struct tm *now, int *num) +{ + time_t n = 0; + GIT_UNUSED(now); + GIT_UNUSED(num); + p_localtime_r(&n, tm); +} + +static const struct special { + const char *name; + void (*fn)(struct tm *, struct tm *, int *); +} special[] = { + { "yesterday", date_yesterday }, + { "noon", date_noon }, + { "midnight", date_midnight }, + { "tea", date_tea }, + { "PM", date_pm }, + { "AM", date_am }, + { "never", date_never }, + { "now", date_now }, + { NULL } +}; + +static const char *number_name[] = { + "zero", "one", "two", "three", "four", + "five", "six", "seven", "eight", "nine", "ten", +}; + +static const struct typelen { + const char *type; + int length; +} typelen[] = { + { "seconds", 1 }, + { "minutes", 60 }, + { "hours", 60*60 }, + { "days", 24*60*60 }, + { "weeks", 7*24*60*60 }, + { NULL } +}; + +static const char *approxidate_alpha(const char *date, struct tm *tm, struct tm *now, int *num, int *touched) +{ + const struct typelen *tl; + const struct special *s; + const char *end = date; + int i; + + while (isalpha(*++end)); + ; + + for (i = 0; i < 12; i++) { + int match = match_string(date, month_names[i]); + if (match >= 3) { + tm->tm_mon = i; + *touched = 1; + return end; + } + } + + for (s = special; s->name; s++) { + int len = strlen(s->name); + if (match_string(date, s->name) == len) { + s->fn(tm, now, num); + *touched = 1; + return end; + } + } + + if (!*num) { + for (i = 1; i < 11; i++) { + int len = strlen(number_name[i]); + if (match_string(date, number_name[i]) == len) { + *num = i; + *touched = 1; + return end; + } + } + if (match_string(date, "last") == 4) { + *num = 1; + *touched = 1; + } + return end; + } + + tl = typelen; + while (tl->type) { + int len = strlen(tl->type); + if (match_string(date, tl->type) >= len-1) { + update_tm(tm, now, tl->length * *num); + *num = 0; + *touched = 1; + return end; + } + tl++; + } + + for (i = 0; i < 7; i++) { + int match = match_string(date, weekday_names[i]); + if (match >= 3) { + int diff, n = *num -1; + *num = 0; + + diff = tm->tm_wday - i; + if (diff <= 0) + n++; + diff += 7*n; + + update_tm(tm, now, diff * 24 * 60 * 60); + *touched = 1; + return end; + } + } + + if (match_string(date, "months") >= 5) { + int n; + update_tm(tm, now, 0); /* fill in date fields if needed */ + n = tm->tm_mon - *num; + *num = 0; + while (n < 0) { + n += 12; + tm->tm_year--; + } + tm->tm_mon = n; + *touched = 1; + return end; + } + + if (match_string(date, "years") >= 4) { + update_tm(tm, now, 0); /* fill in date fields if needed */ + tm->tm_year -= *num; + *num = 0; + *touched = 1; + return end; + } + + return end; +} + +static const char *approxidate_digit(const char *date, struct tm *tm, int *num) +{ + char *end; + unsigned long number = strtoul(date, &end, 10); + + switch (*end) { + case ':': + case '.': + case '/': + case '-': + if (isdigit(end[1])) { + int match = match_multi_number(number, *end, date, end, tm); + if (match) + return date + match; + } + } + + /* Accept zero-padding only for small numbers ("Dec 02", never "Dec 0002") */ + if (date[0] != '0' || end - date <= 2) + *num = number; + return end; +} + +/* + * Do we have a pending number at the end, or when + * we see a new one? Let's assume it's a month day, + * as in "Dec 6, 1992" + */ +static void pending_number(struct tm *tm, int *num) +{ + int number = *num; + + if (number) { + *num = 0; + if (tm->tm_mday < 0 && number < 32) + tm->tm_mday = number; + else if (tm->tm_mon < 0 && number < 13) + tm->tm_mon = number-1; + else if (tm->tm_year < 0) { + if (number > 1969 && number < 2100) + tm->tm_year = number - 1900; + else if (number > 69 && number < 100) + tm->tm_year = number; + else if (number < 38) + tm->tm_year = 100 + number; + /* We screw up for number = 00 ? */ + } + } +} + +static git_time_t approxidate_str(const char *date, + const struct timeval *tv, + int *error_ret) +{ + int number = 0; + int touched = 0; + struct tm tm = {0}, now; + time_t time_sec; + + time_sec = tv->tv_sec; + p_localtime_r(&time_sec, &tm); + now = tm; + + tm.tm_year = -1; + tm.tm_mon = -1; + tm.tm_mday = -1; + + for (;;) { + unsigned char c = *date; + if (!c) + break; + date++; + if (isdigit(c)) { + pending_number(&tm, &number); + date = approxidate_digit(date-1, &tm, &number); + touched = 1; + continue; + } + if (isalpha(c)) + date = approxidate_alpha(date-1, &tm, &now, &number, &touched); + } + pending_number(&tm, &number); + if (!touched) + *error_ret = 1; + return update_tm(&tm, &now, 0); +} + +int git__date_parse(git_time_t *out, const char *date) +{ + struct timeval tv; + git_time_t timestamp; + int offset, error_ret=0; + + if (!parse_date_basic(date, ×tamp, &offset)) { + *out = timestamp; + return 0; + } + + p_gettimeofday(&tv, NULL); + *out = approxidate_str(date, &tv, &error_ret); + return error_ret; +} diff --git a/src/posix.h b/src/posix.h index d020d94ac..3f52f9b72 100644 --- a/src/posix.h +++ b/src/posix.h @@ -59,9 +59,17 @@ extern int p_rename(const char *from, const char *to); typedef int GIT_SOCKET; #define INVALID_SOCKET -1 +#define p_localtime_r localtime_r +#define p_gmtime_r gmtime_r +#define p_gettimeofday gettimeofday + #else typedef SOCKET GIT_SOCKET; +extern struct tm * p_localtime_r (const time_t *timer, struct tm *result); +extern struct tm * p_gmtime_r (const time_t *timer, struct tm *result); +extern int p_gettimeofday(struct timeval *tv, struct timezone *tz); + #endif diff --git a/src/revparse.c b/src/revparse.c new file mode 100644 index 000000000..62c193bf2 --- /dev/null +++ b/src/revparse.c @@ -0,0 +1,748 @@ +/* + * Copyright (C) 2009-2012 the libgit2 contributors + * + * This file is part of libgit2, distributed under the GNU GPL v2 with + * a Linking Exception. For full terms see the included COPYING file. + */ + +#include + +#include "common.h" +#include "buffer.h" +#include "tree.h" + +#include "git2.h" + +GIT_BEGIN_DECL + +typedef enum { + REVPARSE_STATE_INIT, + REVPARSE_STATE_CARET, + REVPARSE_STATE_LINEAR, + REVPARSE_STATE_COLON, + REVPARSE_STATE_DONE, +} revparse_state; + +static void set_invalid_syntax_err(const char *spec) +{ + giterr_set(GITERR_INVALID, "Refspec '%s' is not valid.", spec); +} + +static int revparse_lookup_fully_qualifed_ref(git_object **out, git_repository *repo, const char*spec) +{ + git_oid resolved; + + if (git_reference_name_to_oid(&resolved, repo, spec) < 0) + return GIT_ERROR; + + return git_object_lookup(out, repo, &resolved, GIT_OBJ_ANY); +} + +/* Returns non-zero if yes */ +static int spec_looks_like_describe_output(const char *spec) +{ + regex_t regex; + int regex_error, retcode; + + regex_error = regcomp(®ex, ".+-[0-9]+-g[0-9a-fA-F]+", REG_EXTENDED); + if (regex_error != 0) { + giterr_set_regex(®ex, regex_error); + return 1; /* To be safe */ + } + retcode = regexec(®ex, spec, 0, NULL, 0); + regfree(®ex); + return retcode == 0; +} + +static int revparse_lookup_object(git_object **out, git_repository *repo, const char *spec) +{ + size_t speclen = strlen(spec); + git_object *obj = NULL; + git_oid oid; + git_buf refnamebuf = GIT_BUF_INIT; + static const char* formatters[] = { + "refs/%s", + "refs/tags/%s", + "refs/heads/%s", + "refs/remotes/%s", + "refs/remotes/%s/HEAD", + NULL + }; + unsigned int i; + const char *substr; + + /* "git describe" output; snip everything before/including "-g" */ + substr = strstr(spec, "-g"); + if (substr && + spec_looks_like_describe_output(spec) && + !revparse_lookup_object(out, repo, substr+2)) { + return 0; + } + + /* SHA or prefix */ + if (!git_oid_fromstrn(&oid, spec, speclen)) { + if (!git_object_lookup_prefix(&obj, repo, &oid, speclen, GIT_OBJ_ANY)) { + *out = obj; + return 0; + } + } + + /* Fully-named ref */ + if (!revparse_lookup_fully_qualifed_ref(&obj, repo, spec)) { + *out = obj; + return 0; + } + + /* Partially-named ref; match in this order: */ + for (i=0; formatters[i]; i++) { + git_buf_clear(&refnamebuf); + if (git_buf_printf(&refnamebuf, formatters[i], spec) < 0) { + return GIT_ERROR; + } + + if (!revparse_lookup_fully_qualifed_ref(&obj, repo, git_buf_cstr(&refnamebuf))) { + git_buf_free(&refnamebuf); + *out = obj; + return 0; + } + } + git_buf_free(&refnamebuf); + + giterr_set(GITERR_REFERENCE, "Refspec '%s' not found.", spec); + return GIT_ERROR; +} + + +static int all_chars_are_digits(const char *str, size_t len) +{ + size_t i=0; + for (i=0; i '9') return 0; + } + return 1; +} + +static void normalize_maybe_empty_refname(git_buf *buf, git_repository *repo, const char *refspec, size_t refspeclen) +{ + git_reference *ref; + + if (!refspeclen) { + /* Empty refspec means current branch (target of HEAD) */ + git_reference_lookup(&ref, repo, "HEAD"); + git_buf_puts(buf, git_reference_target(ref)); + git_reference_free(ref); + } else if (strstr(refspec, "HEAD")) { + /* Explicit head */ + git_buf_puts(buf, refspec); + }else { + if (git__prefixcmp(refspec, "refs/heads/") != 0) { + git_buf_printf(buf, "refs/heads/%s", refspec); + } else { + git_buf_puts(buf, refspec); + } + } +} + +static int walk_ref_history(git_object **out, git_repository *repo, const char *refspec, const char *reflogspec) +{ + git_reference *ref; + git_reflog *reflog = NULL; + int n, retcode = GIT_ERROR; + int i, refloglen; + const git_reflog_entry *entry; + git_buf buf = GIT_BUF_INIT; + size_t refspeclen = strlen(refspec); + size_t reflogspeclen = strlen(reflogspec); + + if (git__prefixcmp(reflogspec, "@{") != 0 || + git__suffixcmp(reflogspec, "}") != 0) { + giterr_set(GITERR_INVALID, "Bad reflogspec '%s'", reflogspec); + return GIT_ERROR; + } + + /* "@{-N}" form means walk back N checkouts. That means the HEAD log. */ + if (refspeclen == 0 && !git__prefixcmp(reflogspec, "@{-")) { + regex_t regex; + int regex_error; + + if (git__strtol32(&n, reflogspec+3, NULL, 0) < 0 || + n < 1) { + giterr_set(GITERR_INVALID, "Invalid reflogspec %s", reflogspec); + return GIT_ERROR; + } + + if (!git_reference_lookup(&ref, repo, "HEAD")) { + if (!git_reflog_read(&reflog, ref)) { + regex_error = regcomp(®ex, "checkout: moving from (.*) to .*", REG_EXTENDED); + if (regex_error != 0) { + giterr_set_regex(®ex, regex_error); + } else { + regmatch_t regexmatches[2]; + + refloglen = git_reflog_entrycount(reflog); + for (i=refloglen-1; i >= 0; i--) { + const char *msg; + entry = git_reflog_entry_byindex(reflog, i); + + msg = git_reflog_entry_msg(entry); + if (!regexec(®ex, msg, 2, regexmatches, 0)) { + n--; + if (!n) { + git_buf_put(&buf, msg+regexmatches[1].rm_so, regexmatches[1].rm_eo - regexmatches[1].rm_so); + retcode = revparse_lookup_object(out, repo, git_buf_cstr(&buf)); + break; + } + } + } + regfree(®ex); + } + } + git_reference_free(ref); + } + } else { + int date_error = 0; + git_time_t timestamp; + git_buf datebuf = GIT_BUF_INIT; + + git_buf_put(&datebuf, reflogspec+2, reflogspeclen-3); + date_error = git__date_parse(×tamp, git_buf_cstr(&datebuf)); + + /* @{u} or @{upstream} -> upstream branch, for a tracking branch. This is stored in the config. */ + if (!strcmp(reflogspec, "@{u}") || !strcmp(reflogspec, "@{upstream}")) { + git_config *cfg; + if (!git_repository_config(&cfg, repo)) { + /* Is the ref a tracking branch? */ + const char *remote; + git_buf_clear(&buf); + git_buf_printf(&buf, "branch.%s.remote", refspec); + if (!git_config_get_string(&remote, cfg, git_buf_cstr(&buf))) { + /* Yes. Find the first merge target name. */ + const char *mergetarget; + git_buf_clear(&buf); + git_buf_printf(&buf, "branch.%s.merge", refspec); + if (!git_config_get_string(&mergetarget, cfg, git_buf_cstr(&buf)) && + !git__prefixcmp(mergetarget, "refs/heads/")) { + /* Success. Look up the target and fetch the object. */ + git_buf_clear(&buf); + git_buf_printf(&buf, "refs/remotes/%s/%s", remote, mergetarget+11); + retcode = revparse_lookup_fully_qualifed_ref(out, repo, git_buf_cstr(&buf)); + } + } + git_config_free(cfg); + } + } + + /* @{N} -> Nth prior value for the ref (from reflog) */ + else if (all_chars_are_digits(reflogspec+2, reflogspeclen-3) && + !git__strtol32(&n, reflogspec+2, NULL, 0) && + n <= 100000000) { /* Allow integer time */ + normalize_maybe_empty_refname(&buf, repo, refspec, refspeclen); + + if (n == 0) { + retcode = revparse_lookup_fully_qualifed_ref(out, repo, git_buf_cstr(&buf)); + } else if (!git_reference_lookup(&ref, repo, git_buf_cstr(&buf))) { + if (!git_reflog_read(&reflog, ref)) { + int numentries = git_reflog_entrycount(reflog); + if (numentries < n) { + giterr_set(GITERR_REFERENCE, "Reflog for '%s' has only %d entries, asked for %d", + git_buf_cstr(&buf), numentries, n); + retcode = GIT_ERROR; + } else { + const git_reflog_entry *entry = git_reflog_entry_byindex(reflog, n); + const git_oid *oid = git_reflog_entry_oidold(entry); + retcode = git_object_lookup(out, repo, oid, GIT_OBJ_ANY); + } + } + git_reference_free(ref); + } + } + + else if (!date_error) { + /* Ref as it was on a certain date */ + normalize_maybe_empty_refname(&buf, repo, refspec, refspeclen); + + if (!git_reference_lookup(&ref, repo, git_buf_cstr(&buf))) { + git_reflog *reflog; + if (!git_reflog_read(&reflog, ref)) { + /* Keep walking until we find an entry older than the given date */ + int numentries = git_reflog_entrycount(reflog); + int i; + + /* TODO: clunky. Factor "now" into a utility */ + git_signature *sig; + git_time as_of; + + git_signature_now(&sig, "blah", "blah"); + as_of = sig->when; + git_signature_free(sig); + + as_of.time = (timestamp > 0) + ? timestamp + : sig->when.time + timestamp; + + for (i=numentries-1; i>0; i--) { + const git_reflog_entry *entry = git_reflog_entry_byindex(reflog, i); + git_time commit_time = git_reflog_entry_committer(entry)->when; + if (git__time_cmp(&commit_time, &as_of) <= 0 ) { + retcode = git_object_lookup(out, repo, git_reflog_entry_oidnew(entry), GIT_OBJ_ANY); + break; + } + } + + if (!i) { + /* Didn't find a match. Use the oldest revision in the reflog. */ + const git_reflog_entry *entry = git_reflog_entry_byindex(reflog, 0); + retcode = git_object_lookup(out, repo, git_reflog_entry_oidnew(entry), GIT_OBJ_ANY); + } + + git_reflog_free(reflog); + } + + git_reference_free(ref); + } + } + + git_buf_free(&datebuf); + } + + if (reflog) git_reflog_free(reflog); + git_buf_free(&buf); + return retcode; +} + +static git_object* dereference_object(git_object *obj) +{ + git_otype type = git_object_type(obj); + + switch (type) { + case GIT_OBJ_COMMIT: + { + git_tree *tree = NULL; + if (0 == git_commit_tree(&tree, (git_commit*)obj)) { + return (git_object*)tree; + } + } + break; + case GIT_OBJ_TAG: + { + git_object *newobj = NULL; + if (0 == git_tag_target(&newobj, (git_tag*)obj)) { + return newobj; + } + } + break; + + default: + case GIT_OBJ_TREE: + case GIT_OBJ_BLOB: + case GIT_OBJ_OFS_DELTA: + case GIT_OBJ_REF_DELTA: + break; + } + + /* Can't dereference some types */ + return NULL; +} + +static int dereference_to_type(git_object **out, git_object *obj, git_otype target_type) +{ + int retcode = 1; + git_object *obj1 = obj, *obj2 = obj; + + while (retcode > 0) { + git_otype this_type = git_object_type(obj1); + + if (this_type == target_type) { + *out = obj1; + retcode = 0; + } else { + /* Dereference once, if possible. */ + obj2 = dereference_object(obj1); + if (!obj2) { + giterr_set(GITERR_REFERENCE, "Can't dereference to type"); + retcode = GIT_ERROR; + } + } + if (obj1 != obj && obj1 != obj2) { + git_object_free(obj1); + } + obj1 = obj2; + } + return retcode; +} + +static git_otype parse_obj_type(const char *str) +{ + if (!strcmp(str, "{commit}")) return GIT_OBJ_COMMIT; + if (!strcmp(str, "{tree}")) return GIT_OBJ_TREE; + if (!strcmp(str, "{blob}")) return GIT_OBJ_BLOB; + if (!strcmp(str, "{tag}")) return GIT_OBJ_TAG; + return GIT_OBJ_BAD; +} + +static int handle_caret_syntax(git_object **out, git_repository *repo, git_object *obj, const char *movement) +{ + git_commit *commit; + size_t movementlen = strlen(movement); + int n; + + if (*movement == '{') { + if (movement[movementlen-1] != '}') { + set_invalid_syntax_err(movement); + return GIT_ERROR; + } + + /* {} -> Dereference until we reach an object that isn't a tag. */ + if (movementlen == 2) { + git_object *newobj = obj; + git_object *newobj2 = newobj; + while (git_object_type(newobj2) == GIT_OBJ_TAG) { + newobj2 = dereference_object(newobj); + if (newobj != obj) git_object_free(newobj); + if (!newobj2) { + giterr_set(GITERR_REFERENCE, "Couldn't find object of target type."); + return GIT_ERROR; + } + newobj = newobj2; + } + *out = newobj2; + return 0; + } + + /* {/...} -> Walk all commits until we see a commit msg that matches the phrase. */ + if (movement[1] == '/') { + int retcode = GIT_ERROR; + git_revwalk *walk; + if (!git_revwalk_new(&walk, repo)) { + git_oid oid; + regex_t preg; + int reg_error; + git_buf buf = GIT_BUF_INIT; + + git_revwalk_sorting(walk, GIT_SORT_TIME); + git_revwalk_push(walk, git_object_id(obj)); + + /* Extract the regex from the movement string */ + git_buf_put(&buf, movement+2, strlen(movement)-3); + + reg_error = regcomp(&preg, git_buf_cstr(&buf), REG_EXTENDED); + if (reg_error != 0) { + giterr_set_regex(&preg, reg_error); + } else { + while(!git_revwalk_next(&oid, walk)) { + git_object *walkobj; + + /* Fetch the commit object, and check for matches in the message */ + if (!git_object_lookup(&walkobj, repo, &oid, GIT_OBJ_COMMIT)) { + if (!regexec(&preg, git_commit_message((git_commit*)walkobj), 0, NULL, 0)) { + /* Found it! */ + retcode = 0; + *out = walkobj; + if (obj == walkobj) { + /* Avoid leaking an object */ + git_object_free(walkobj); + } + break; + } + git_object_free(walkobj); + } + } + if (retcode < 0) { + giterr_set(GITERR_REFERENCE, "Couldn't find a match for %s", movement); + } + regfree(&preg); + } + + git_buf_free(&buf); + git_revwalk_free(walk); + } + return retcode; + } + + /* {...} -> Dereference until we reach an object of a certain type. */ + if (dereference_to_type(out, obj, parse_obj_type(movement)) < 0) { + return GIT_ERROR; + } + return 0; + } + + /* Dereference until we reach a commit. */ + if (dereference_to_type(&obj, obj, GIT_OBJ_COMMIT) < 0) { + /* Can't dereference to a commit; fail */ + return GIT_ERROR; + } + + /* "^" is the same as "^1" */ + if (movementlen == 0) { + n = 1; + } else { + git__strtol32(&n, movement, NULL, 0); + } + commit = (git_commit*)obj; + + /* "^0" just returns the input */ + if (n == 0) { + *out = obj; + return 0; + } + + if (git_commit_parent(&commit, commit, n-1) < 0) { + return GIT_ERROR; + } + + *out = (git_object*)commit; + return 0; +} + +static int handle_linear_syntax(git_object **out, git_object *obj, const char *movement) +{ + git_commit *commit1, *commit2; + int i, n; + + /* Dereference until we reach a commit. */ + if (dereference_to_type(&obj, obj, GIT_OBJ_COMMIT) < 0) { + /* Can't dereference to a commit; fail */ + return GIT_ERROR; + } + + /* "~" is the same as "~1" */ + if (strlen(movement) == 0) { + n = 1; + } else { + git__strtol32(&n, movement, NULL, 0); + } + commit1 = (git_commit*)obj; + + /* "~0" just returns the input */ + if (n == 0) { + *out = obj; + return 0; + } + + for (i=0; ioid) < 0) { + git__free(alloc); + return GIT_ERROR; + } + } + } + + git_oid_cpy(out, git_tree_entry_id(entry)); + git__free(alloc); + return 0; +} + +static int handle_colon_syntax(git_object **out, + git_repository *repo, + git_object *obj, + const char *path) +{ + git_tree *tree; + git_oid oid; + + /* Dereference until we reach a tree. */ + if (dereference_to_type(&obj, obj, GIT_OBJ_TREE) < 0) { + return GIT_ERROR; + } + tree = (git_tree*)obj; + + /* Find the blob at the given path. */ + oid_for_tree_path(&oid, tree, repo, path); + git_tree_free(tree); + return git_object_lookup(out, repo, &oid, GIT_OBJ_ANY); +} + +static int revparse_global_grep(git_object **out, git_repository *repo, const char *pattern) +{ + git_revwalk *walk; + int retcode = GIT_ERROR; + + if (!git_revwalk_new(&walk, repo)) { + regex_t preg; + int reg_error; + git_oid oid; + + git_revwalk_sorting(walk, GIT_SORT_TIME); + git_revwalk_push_glob(walk, "refs/heads/*"); + + reg_error = regcomp(&preg, pattern, REG_EXTENDED); + if (reg_error != 0) { + giterr_set_regex(&preg, reg_error); + } else { + git_object *walkobj = NULL, *resultobj = NULL; + while(!git_revwalk_next(&oid, walk)) { + /* Fetch the commit object, and check for matches in the message */ + if (walkobj != resultobj) git_object_free(walkobj); + if (!git_object_lookup(&walkobj, repo, &oid, GIT_OBJ_COMMIT)) { + if (!regexec(&preg, git_commit_message((git_commit*)walkobj), 0, NULL, 0)) { + /* Match! */ + resultobj = walkobj; + retcode = 0; + break; + } + } + } + if (!resultobj) { + giterr_set(GITERR_REFERENCE, "Couldn't find a match for %s", pattern); + } else { + *out = resultobj; + } + regfree(&preg); + git_revwalk_free(walk); + } + } + + return retcode; +} + +int git_revparse_single(git_object **out, git_repository *repo, const char *spec) +{ + revparse_state current_state = REVPARSE_STATE_INIT, next_state = REVPARSE_STATE_INIT; + const char *spec_cur = spec; + git_object *cur_obj = NULL, *next_obj = NULL; + git_buf specbuffer = GIT_BUF_INIT, stepbuffer = GIT_BUF_INIT; + int retcode = 0; + + assert(out && repo && spec); + + if (spec[0] == ':') { + if (spec[1] == '/') { + return revparse_global_grep(out, repo, spec+2); + } + /* TODO: support merge-stage path lookup (":2:Makefile"). */ + giterr_set(GITERR_INVALID, "Unimplemented"); + return GIT_ERROR; + } + + while (current_state != REVPARSE_STATE_DONE) { + switch (current_state) { + case REVPARSE_STATE_INIT: + if (!*spec_cur) { + /* No operators, just a name. Find it and return. */ + retcode = revparse_lookup_object(out, repo, spec); + next_state = REVPARSE_STATE_DONE; + } else if (*spec_cur == '@') { + /* '@' syntax doesn't allow chaining */ + git_buf_puts(&stepbuffer, spec_cur); + retcode = walk_ref_history(out, repo, git_buf_cstr(&specbuffer), git_buf_cstr(&stepbuffer)); + next_state = REVPARSE_STATE_DONE; + } else if (*spec_cur == '^') { + next_state = REVPARSE_STATE_CARET; + } else if (*spec_cur == '~') { + next_state = REVPARSE_STATE_LINEAR; + } else if (*spec_cur == ':') { + next_state = REVPARSE_STATE_COLON; + } else { + git_buf_putc(&specbuffer, *spec_cur); + } + spec_cur++; + + if (current_state != next_state && next_state != REVPARSE_STATE_DONE) { + /* Leaving INIT state, find the object specified, in case that state needs it */ + if (revparse_lookup_object(&next_obj, repo, git_buf_cstr(&specbuffer)) < 0) { + retcode = GIT_ERROR; + next_state = REVPARSE_STATE_DONE; + } + } + break; + + + case REVPARSE_STATE_CARET: + /* Gather characters until NULL, '~', or '^' */ + if (!*spec_cur) { + retcode = handle_caret_syntax(out, repo, cur_obj, git_buf_cstr(&stepbuffer)); + next_state = REVPARSE_STATE_DONE; + } else if (*spec_cur == '~') { + retcode = handle_caret_syntax(&next_obj, repo, cur_obj, git_buf_cstr(&stepbuffer)); + git_buf_clear(&stepbuffer); + next_state = !retcode ? REVPARSE_STATE_LINEAR : REVPARSE_STATE_DONE; + } else if (*spec_cur == '^') { + retcode = handle_caret_syntax(&next_obj, repo, cur_obj, git_buf_cstr(&stepbuffer)); + git_buf_clear(&stepbuffer); + if (retcode < 0) { + next_state = REVPARSE_STATE_DONE; + } + } else { + git_buf_putc(&stepbuffer, *spec_cur); + } + spec_cur++; + break; + + case REVPARSE_STATE_LINEAR: + if (!*spec_cur) { + retcode = handle_linear_syntax(out, cur_obj, git_buf_cstr(&stepbuffer)); + next_state = REVPARSE_STATE_DONE; + } else if (*spec_cur == '~') { + retcode = handle_linear_syntax(&next_obj, cur_obj, git_buf_cstr(&stepbuffer)); + git_buf_clear(&stepbuffer); + if (retcode < 0) { + next_state = REVPARSE_STATE_DONE; + } + } else if (*spec_cur == '^') { + retcode = handle_linear_syntax(&next_obj, cur_obj, git_buf_cstr(&stepbuffer)); + git_buf_clear(&stepbuffer); + next_state = !retcode ? REVPARSE_STATE_CARET : REVPARSE_STATE_DONE; + } else { + git_buf_putc(&stepbuffer, *spec_cur); + } + spec_cur++; + break; + + case REVPARSE_STATE_COLON: + if (*spec_cur) { + git_buf_putc(&stepbuffer, *spec_cur); + } else { + retcode = handle_colon_syntax(out, repo, cur_obj, git_buf_cstr(&stepbuffer)); + next_state = REVPARSE_STATE_DONE; + } + spec_cur++; + break; + + case REVPARSE_STATE_DONE: + if (cur_obj && *out != cur_obj) git_object_free(cur_obj); + if (next_obj && *out != next_obj) git_object_free(next_obj); + break; + } + + current_state = next_state; + if (cur_obj != next_obj) { + if (cur_obj) git_object_free(cur_obj); + cur_obj = next_obj; + } + } + + if (*out != cur_obj) git_object_free(cur_obj); + if (*out != next_obj && next_obj != cur_obj) git_object_free(next_obj); + + git_buf_free(&specbuffer); + git_buf_free(&stepbuffer); + return retcode; +} + + +GIT_END_DECL diff --git a/src/signature.c b/src/signature.c index 7d329c4c9..332bdf65f 100644 --- a/src/signature.c +++ b/src/signature.c @@ -113,26 +113,14 @@ int git_signature_now(git_signature **sig_out, const char *name, const char *ema time_t offset; struct tm *utc_tm, *local_tm; git_signature *sig; - -#ifndef GIT_WIN32 struct tm _utc, _local; -#endif *sig_out = NULL; time(&now); - /** - * On Win32, `gmtime_r` doesn't exist but - * `gmtime` is threadsafe, so we can use that - */ -#ifdef GIT_WIN32 - utc_tm = gmtime(&now); - local_tm = localtime(&now); -#else - utc_tm = gmtime_r(&now, &_utc); - local_tm = localtime_r(&now, &_local); -#endif + utc_tm = p_gmtime_r(&now, &_utc); + local_tm = p_localtime_r(&now, &_local); offset = mktime(local_tm) - mktime(utc_tm); offset /= 60; diff --git a/src/util.h b/src/util.h index c6851ac7e..eed2bc80c 100644 --- a/src/util.h +++ b/src/util.h @@ -209,6 +209,13 @@ GIT_INLINE(bool) git__isspace(int c) return (c == ' ' || c == '\t' || c == '\n' || c == '\f' || c == '\r' || c == '\v'); } +GIT_INLINE(int) git__time_cmp(const git_time *a, const git_time *b) +{ + /* Adjust for time zones. Times are in seconds, offsets are in minutes. */ + git_time_t adjusted_a = a->time + ((b->offset - a->offset) * 60); + return (int)(adjusted_a - b->time); +} + GIT_INLINE(bool) git__iswildcard(int c) { return (c == '*' || c == '?' || c == '['); @@ -223,4 +230,14 @@ GIT_INLINE(bool) git__iswildcard(int c) */ extern int git__parse_bool(int *out, const char *value); +/* + * Parse a string into a value as a git_time_t. + * + * Sample valid input: + * - "yesterday" + * - "July 17, 2003" + * - "2003-7-17 08:23" + */ +int git__date_parse(git_time_t *out, const char *date); + #endif /* INCLUDE_util_h__ */ diff --git a/src/win32/posix_w32.c b/src/win32/posix_w32.c index 10de70da8..f0441df97 100644 --- a/src/win32/posix_w32.c +++ b/src/win32/posix_w32.c @@ -470,3 +470,79 @@ int p_send(GIT_SOCKET socket, const void *buffer, size_t length, int flags) return send(socket, buffer, (int)length, flags); } + +/** + * Borrowed from http://old.nabble.com/Porting-localtime_r-and-gmtime_r-td15282276.html + * On Win32, `gmtime_r` doesn't exist but `gmtime` is threadsafe, so we can use that + */ +struct tm * +p_localtime_r (const time_t *timer, struct tm *result) +{ + struct tm *local_result; + local_result = localtime (timer); + + if (local_result == NULL || result == NULL) + return NULL; + + memcpy (result, local_result, sizeof (struct tm)); + return result; +} +struct tm * +p_gmtime_r (const time_t *timer, struct tm *result) +{ + struct tm *local_result; + local_result = gmtime (timer); + + if (local_result == NULL || result == NULL) + return NULL; + + memcpy (result, local_result, sizeof (struct tm)); + return result; +} + +#if defined(_MSC_VER) || defined(_MSC_EXTENSIONS) +#define DELTA_EPOCH_IN_MICROSECS 11644473600000000Ui64 +#else +#define DELTA_EPOCH_IN_MICROSECS 11644473600000000ULL +#endif + +struct timezone +{ + int tz_minuteswest; /* minutes W of Greenwich */ + int tz_dsttime; /* type of dst correction */ +}; + +int p_gettimeofday(struct timeval *tv, struct timezone *tz) +{ + FILETIME ft; + unsigned __int64 tmpres = 0; + static int tzflag; + + if (NULL != tv) + { + GetSystemTimeAsFileTime(&ft); + + tmpres |= ft.dwHighDateTime; + tmpres <<= 32; + tmpres |= ft.dwLowDateTime; + + /*converting file time to unix epoch*/ + tmpres /= 10; /*convert into microseconds*/ + tmpres -= DELTA_EPOCH_IN_MICROSECS; + tv->tv_sec = (long)(tmpres / 1000000UL); + tv->tv_usec = (long)(tmpres % 1000000UL); + } + + if (NULL != tz) + { + if (!tzflag) + { + _tzset(); + tzflag++; + } + tz->tz_minuteswest = _timezone / 60; + tz->tz_dsttime = _daylight; + } + + return 0; +} diff --git a/tests-clar/date/date.c b/tests-clar/date/date.c new file mode 100644 index 000000000..88881d1e1 --- /dev/null +++ b/tests-clar/date/date.c @@ -0,0 +1,15 @@ +#include "clar_libgit2.h" + +#include "util.h" + +void test_date_date__overflow(void) +{ +#ifdef __LP64__ + git_time_t d2038, d2039; + + /* This is expected to fail on a 32-bit machine. */ + cl_git_pass(git__date_parse(&d2038, "2038-1-1")); + cl_git_pass(git__date_parse(&d2039, "2039-1-1")); + cl_assert(d2038 < d2039); +#endif +} diff --git a/tests-clar/network/remotelocal.c b/tests-clar/network/remotelocal.c index 8cee7ce08..e66ea118f 100644 --- a/tests-clar/network/remotelocal.c +++ b/tests-clar/network/remotelocal.c @@ -107,7 +107,7 @@ void test_network_remotelocal__retrieve_advertised_references(void) cl_git_pass(git_remote_ls(remote, &count_ref__cb, &how_many_refs)); - cl_assert(how_many_refs == 14); /* 1 HEAD + 6 heads + 1 lightweight tag + 3 annotated tags + 3 peeled target */ + cl_assert_equal_i(how_many_refs, 20); } void test_network_remotelocal__retrieve_advertised_references_from_spaced_repository(void) @@ -121,7 +121,7 @@ void test_network_remotelocal__retrieve_advertised_references_from_spaced_reposi cl_git_pass(git_remote_ls(remote, &count_ref__cb, &how_many_refs)); - cl_assert(how_many_refs == 14); /* 1 HEAD + 6 heads + 1 lightweight tag + 3 annotated tags + 3 peeled target */ + cl_assert_equal_i(how_many_refs, 20); git_remote_free(remote); /* Disconnect from the "spaced repo" before the cleanup */ remote = NULL; diff --git a/tests-clar/refs/branches/listall.c b/tests-clar/refs/branches/listall.c index 0a5634fb4..0bb559173 100644 --- a/tests-clar/refs/branches/listall.c +++ b/tests-clar/refs/branches/listall.c @@ -30,22 +30,22 @@ static void assert_retrieval(unsigned int flags, unsigned int expected_count) { cl_git_pass(git_branch_list(&branch_list, repo, flags)); - cl_assert_equal_i(expected_count, branch_list.count); + cl_assert_equal_i(branch_list.count, expected_count); } void test_refs_branches_listall__retrieve_all_branches(void) { - assert_retrieval(GIT_BRANCH_LOCAL | GIT_BRANCH_REMOTE, 6 + 1); + assert_retrieval(GIT_BRANCH_LOCAL | GIT_BRANCH_REMOTE, 9); } void test_refs_branches_listall__retrieve_remote_branches(void) { - assert_retrieval(GIT_BRANCH_REMOTE, 1); + assert_retrieval(GIT_BRANCH_REMOTE, 2); } void test_refs_branches_listall__retrieve_local_branches(void) { - assert_retrieval(GIT_BRANCH_LOCAL, 6); + assert_retrieval(GIT_BRANCH_LOCAL, 7); } static void assert_branch_list_contains(git_strarray *branches, const char* expected_branch_name) diff --git a/tests-clar/refs/revparse.c b/tests-clar/refs/revparse.c new file mode 100644 index 000000000..0bd6ad704 --- /dev/null +++ b/tests-clar/refs/revparse.c @@ -0,0 +1,170 @@ +#include "clar_libgit2.h" + +#include "git2/revparse.h" + +static git_repository *g_repo; +static git_object *g_obj; + + + +/* Helpers */ +static void test_object(const char *spec, const char *expected_oid) +{ + char objstr[64] = {0}; + + cl_git_pass(git_revparse_single(&g_obj, g_repo, spec)); + git_oid_fmt(objstr, git_object_id(g_obj)); + cl_assert_equal_s(objstr, expected_oid); + + git_object_free(g_obj); + g_obj = NULL; +} + + +void test_refs_revparse__initialize(void) +{ + g_repo = cl_git_sandbox_init("testrepo.git"); +} + +void test_refs_revparse__cleanup(void) +{ + cl_git_sandbox_cleanup(); + g_obj = NULL; +} + + +void test_refs_revparse__nonexistant_object(void) +{ + cl_git_fail(git_revparse_single(&g_obj, g_repo, "this doesn't exist")); + cl_git_fail(git_revparse_single(&g_obj, g_repo, "this doesn't exist^1")); + cl_git_fail(git_revparse_single(&g_obj, g_repo, "this doesn't exist~2")); +} + +void test_refs_revparse__shas(void) +{ + test_object("c47800c7266a2be04c571c04d5a6614691ea99bd", "c47800c7266a2be04c571c04d5a6614691ea99bd"); + test_object("c47800c", "c47800c7266a2be04c571c04d5a6614691ea99bd"); +} + +void test_refs_revparse__head(void) +{ + test_object("HEAD", "a65fedf39aefe402d3bb6e24df4d4f5fe4547750"); +} + +void test_refs_revparse__full_refs(void) +{ + test_object("refs/heads/master", "a65fedf39aefe402d3bb6e24df4d4f5fe4547750"); + test_object("refs/heads/test", "e90810b8df3e80c413d903f631643c716887138d"); + test_object("refs/tags/test", "b25fa35b38051e4ae45d4222e795f9df2e43f1d1"); +} + +void test_refs_revparse__partial_refs(void) +{ + test_object("point_to_blob", "1385f264afb75a56a5bec74243be9b367ba4ca08"); + test_object("packed-test", "4a202b346bb0fb0db7eff3cffeb3c70babbd2045"); + test_object("br2", "a4a7dce85cf63874e984719f4fdd239f5145052f"); +} + +void test_refs_revparse__describe_output(void) +{ + test_object("blah-7-gc47800c", "c47800c7266a2be04c571c04d5a6614691ea99bd"); + test_object("not-good", "a65fedf39aefe402d3bb6e24df4d4f5fe4547750"); +} + +void test_refs_revparse__nth_parent(void) +{ + test_object("be3563a^1", "9fd738e8f7967c078dceed8190330fc8648ee56a"); + test_object("be3563a^", "9fd738e8f7967c078dceed8190330fc8648ee56a"); + test_object("be3563a^2", "c47800c7266a2be04c571c04d5a6614691ea99bd"); + test_object("be3563a^1^1", "4a202b346bb0fb0db7eff3cffeb3c70babbd2045"); + test_object("be3563a^2^1", "5b5b025afb0b4c913b4c338a42934a3863bf3644"); + test_object("be3563a^0", "be3563ae3f795b2b4353bcce3a527ad0a4f7f644"); +} + +void test_refs_revparse__not_tag(void) +{ + test_object("point_to_blob^{}", "1385f264afb75a56a5bec74243be9b367ba4ca08"); + test_object("wrapped_tag^{}", "a65fedf39aefe402d3bb6e24df4d4f5fe4547750"); +} + +void test_refs_revparse__to_type(void) +{ + test_object("wrapped_tag^{commit}", "a65fedf39aefe402d3bb6e24df4d4f5fe4547750"); + test_object("wrapped_tag^{tree}", "944c0f6e4dfa41595e6eb3ceecdb14f50fe18162"); + test_object("point_to_blob^{blob}", "1385f264afb75a56a5bec74243be9b367ba4ca08"); + + cl_git_fail(git_revparse_single(&g_obj, g_repo, "wrapped_tag^{blob}")); +} + +void test_refs_revparse__linear_history(void) +{ + test_object("master~0", "a65fedf39aefe402d3bb6e24df4d4f5fe4547750"); + test_object("master~1", "be3563ae3f795b2b4353bcce3a527ad0a4f7f644"); + test_object("master~2", "9fd738e8f7967c078dceed8190330fc8648ee56a"); + test_object("master~1~1", "9fd738e8f7967c078dceed8190330fc8648ee56a"); +} + +void test_refs_revparse__chaining(void) +{ + test_object("master~1^1", "9fd738e8f7967c078dceed8190330fc8648ee56a"); + test_object("master~1^2", "c47800c7266a2be04c571c04d5a6614691ea99bd"); + test_object("master^1^2~1", "5b5b025afb0b4c913b4c338a42934a3863bf3644"); + test_object("master^1^1^1^1^1", "8496071c1b46c854b31185ea97743be6a8774479"); +} + +void test_refs_revparse__reflog(void) +{ + cl_git_fail(git_revparse_single(&g_obj, g_repo, "@{-xyz}")); + cl_git_fail(git_revparse_single(&g_obj, g_repo, "@{-0}")); + cl_git_fail(git_revparse_single(&g_obj, g_repo, "@{1000}")); + + test_object("@{-2}", "a65fedf39aefe402d3bb6e24df4d4f5fe4547750"); + test_object("@{-1}", "a4a7dce85cf63874e984719f4fdd239f5145052f"); + test_object("master@{0}", "a65fedf39aefe402d3bb6e24df4d4f5fe4547750"); + test_object("master@{1}", "be3563ae3f795b2b4353bcce3a527ad0a4f7f644"); + test_object("@{0}", "a65fedf39aefe402d3bb6e24df4d4f5fe4547750"); + test_object("@{1}", "be3563ae3f795b2b4353bcce3a527ad0a4f7f644"); + test_object("master@{upstream}", "be3563ae3f795b2b4353bcce3a527ad0a4f7f644"); + test_object("master@{u}", "be3563ae3f795b2b4353bcce3a527ad0a4f7f644"); +} + +void test_refs_revparse__revwalk(void) +{ + cl_git_fail(git_revparse_single(&g_obj, g_repo, "master^{/not found in any commit}")); + cl_git_fail(git_revparse_single(&g_obj, g_repo, "master^{/merge}")); + cl_git_fail(git_revparse_single(&g_obj, g_repo, "master^{/((}")); + + test_object("master^{/anoth}", "5b5b025afb0b4c913b4c338a42934a3863bf3644"); + test_object("master^{/Merge}", "be3563ae3f795b2b4353bcce3a527ad0a4f7f644"); + test_object("br2^{/Merge}", "a4a7dce85cf63874e984719f4fdd239f5145052f"); + test_object("master^{/fo.rth}", "9fd738e8f7967c078dceed8190330fc8648ee56a"); +} + +void test_refs_revparse__date(void) +{ + test_object("HEAD@{10 years ago}", "be3563ae3f795b2b4353bcce3a527ad0a4f7f644"); + test_object("HEAD@{1 second}", "a65fedf39aefe402d3bb6e24df4d4f5fe4547750"); + test_object("master@{2012-4-30 10:23:20 -0800}", "be3563ae3f795b2b4353bcce3a527ad0a4f7f644"); + test_object("master@{2012-4-30 10:24 -0800}", "a65fedf39aefe402d3bb6e24df4d4f5fe4547750"); + test_object("master@{2012-4-30 16:24 -0200}", "a65fedf39aefe402d3bb6e24df4d4f5fe4547750"); + test_object("master@{1335806600}", "be3563ae3f795b2b4353bcce3a527ad0a4f7f644"); + test_object("master@{1335816640}", "a65fedf39aefe402d3bb6e24df4d4f5fe4547750"); + + /* Core git gives a65fedf, because they don't take time zones into account. */ + test_object("master@{1335806640}", "be3563ae3f795b2b4353bcce3a527ad0a4f7f644"); +} + +void test_refs_revparse__colon(void) +{ + cl_git_fail(git_revparse_single(&g_obj, g_repo, ":/")); + cl_git_fail(git_revparse_single(&g_obj, g_repo, ":/not found in any commit")); + cl_git_fail(git_revparse_single(&g_obj, g_repo, ":2:README")); + + test_object("subtrees:ab/4.txt", "d6c93164c249c8000205dd4ec5cbca1b516d487f"); + test_object("subtrees:ab/de/fgh/1.txt", "1f67fc4386b2d171e0d21be1c447e12660561f9b"); + test_object("master:README", "a8233120f6ad708f843d861ce2b7228ec4e3dec6"); + test_object("master:new.txt", "a71586c1dfe8a71c6cbf6c129f404c5642ff31bd"); + test_object(":/Merge", "a4a7dce85cf63874e984719f4fdd239f5145052f"); + test_object(":/one", "c47800c7266a2be04c571c04d5a6614691ea99bd"); + test_object(":/packed commit t", "41bc8c69075bbdb46c5c6f0566cc8cc5b46e8bd9"); +} diff --git a/tests-clar/resources/testrepo.git/config b/tests-clar/resources/testrepo.git/config index 1a5aacdfa..b4fdac6c2 100644 --- a/tests-clar/resources/testrepo.git/config +++ b/tests-clar/resources/testrepo.git/config @@ -6,3 +6,7 @@ [remote "test"] url = git://github.com/libgit2/libgit2 fetch = +refs/heads/*:refs/remotes/test/* + +[branch "master"] + remote = test + merge = refs/heads/master diff --git a/tests-clar/resources/testrepo.git/logs/HEAD b/tests-clar/resources/testrepo.git/logs/HEAD new file mode 100644 index 000000000..b16c9b313 --- /dev/null +++ b/tests-clar/resources/testrepo.git/logs/HEAD @@ -0,0 +1,5 @@ +0000000000000000000000000000000000000000 be3563ae3f795b2b4353bcce3a527ad0a4f7f644 Ben Straub 1335806563 -0700 clone: from /Users/ben/src/libgit2/tests/resources/testrepo.git +be3563ae3f795b2b4353bcce3a527ad0a4f7f644 a65fedf39aefe402d3bb6e24df4d4f5fe4547750 Ben Straub 1335806603 -0900 commit: +a65fedf39aefe402d3bb6e24df4d4f5fe4547750 c47800c7266a2be04c571c04d5a6614691ea99bd Ben Straub 1335806608 -0900 checkout: moving from master to br2 +c47800c7266a2be04c571c04d5a6614691ea99bd a4a7dce85cf63874e984719f4fdd239f5145052f Ben Straub 1335806617 -0900 commit: checking in +a4a7dce85cf63874e984719f4fdd239f5145052f a65fedf39aefe402d3bb6e24df4d4f5fe4547750 Ben Straub 1335806621 -0900 checkout: moving from br2 to master diff --git a/tests-clar/resources/testrepo.git/logs/refs/heads/br2 b/tests-clar/resources/testrepo.git/logs/refs/heads/br2 new file mode 100644 index 000000000..4e27f6b8d --- /dev/null +++ b/tests-clar/resources/testrepo.git/logs/refs/heads/br2 @@ -0,0 +1,2 @@ +0000000000000000000000000000000000000000 c47800c7266a2be04c571c04d5a6614691ea99bd Ben Straub 1335806608 -0700 branch: Created from refs/remotes/origin/br2 +a4a7dce85cf63874e984719f4fdd239f5145052f a4a7dce85cf63874e984719f4fdd239f5145052f Ben Straub 1335806617 -0700 commit: checking in diff --git a/tests-clar/resources/testrepo.git/logs/refs/heads/master b/tests-clar/resources/testrepo.git/logs/refs/heads/master new file mode 100644 index 000000000..e1c729a45 --- /dev/null +++ b/tests-clar/resources/testrepo.git/logs/refs/heads/master @@ -0,0 +1,2 @@ +0000000000000000000000000000000000000000 be3563ae3f795b2b4353bcce3a527ad0a4f7f644 Ben Straub 1335806563 -0800 clone: from /Users/ben/src/libgit2/tests/resources/testrepo.git +be3563ae3f795b2b4353bcce3a527ad0a4f7f644 a65fedf39aefe402d3bb6e24df4d4f5fe4547750 Ben Straub 1335806603 -0800 commit: checking in diff --git a/tests-clar/resources/testrepo.git/logs/refs/heads/not-good b/tests-clar/resources/testrepo.git/logs/refs/heads/not-good new file mode 100644 index 000000000..bfbeacb8a --- /dev/null +++ b/tests-clar/resources/testrepo.git/logs/refs/heads/not-good @@ -0,0 +1 @@ +0000000000000000000000000000000000000000 a65fedf39aefe402d3bb6e24df4d4f5fe4547750 Ben Straub 1336761944 -0700 branch: Created from master diff --git a/tests-clar/resources/testrepo.git/logs/refs/remotes/origin/HEAD b/tests-clar/resources/testrepo.git/logs/refs/remotes/origin/HEAD new file mode 100644 index 000000000..f1aac6d0f --- /dev/null +++ b/tests-clar/resources/testrepo.git/logs/refs/remotes/origin/HEAD @@ -0,0 +1 @@ +0000000000000000000000000000000000000000 be3563ae3f795b2b4353bcce3a527ad0a4f7f644 Ben Straub 1335806563 -0700 clone: from /Users/ben/src/libgit2/tests/resources/testrepo.git diff --git a/tests-clar/resources/testrepo.git/objects/84/9a5e34a26815e821f865b8479f5815a47af0fe b/tests-clar/resources/testrepo.git/objects/84/9a5e34a26815e821f865b8479f5815a47af0fe new file mode 100644 index 000000000..71019a636 --- /dev/null +++ b/tests-clar/resources/testrepo.git/objects/84/9a5e34a26815e821f865b8479f5815a47af0fe @@ -0,0 +1,2 @@ +xM F]s41x(IKݽ/_P@!8)es + N&FGSƄh{+CZzvF7Z-kx\[P8GK/^ l>.4 \ No newline at end of file diff --git a/tests-clar/resources/testrepo.git/refs/heads/not-good b/tests-clar/resources/testrepo.git/refs/heads/not-good new file mode 100644 index 000000000..3d8f0a402 --- /dev/null +++ b/tests-clar/resources/testrepo.git/refs/heads/not-good @@ -0,0 +1 @@ +a65fedf39aefe402d3bb6e24df4d4f5fe4547750 diff --git a/tests-clar/resources/testrepo.git/refs/remotes/test/master b/tests-clar/resources/testrepo.git/refs/remotes/test/master new file mode 100644 index 000000000..9536ad89c --- /dev/null +++ b/tests-clar/resources/testrepo.git/refs/remotes/test/master @@ -0,0 +1 @@ +be3563ae3f795b2b4353bcce3a527ad0a4f7f644 diff --git a/tests-clar/resources/testrepo.git/refs/tags/hard_tag b/tests-clar/resources/testrepo.git/refs/tags/hard_tag new file mode 100644 index 000000000..59ce65649 --- /dev/null +++ b/tests-clar/resources/testrepo.git/refs/tags/hard_tag @@ -0,0 +1 @@ +849a5e34a26815e821f865b8479f5815a47af0fe diff --git a/tests-clar/resources/testrepo.git/refs/tags/wrapped_tag b/tests-clar/resources/testrepo.git/refs/tags/wrapped_tag new file mode 100644 index 000000000..59ce65649 --- /dev/null +++ b/tests-clar/resources/testrepo.git/refs/tags/wrapped_tag @@ -0,0 +1 @@ +849a5e34a26815e821f865b8479f5815a47af0fe