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config: don't special-case the multivar iterator

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Build it on top of the normal iterator instead, which lets use re-use
a lot of code.
This commit is contained in:
Carlos Martín Nieto 2013-08-14 00:45:05 +02:00
parent 43e5dda702
commit f4be8209af
6 changed files with 83 additions and 250 deletions
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2
include/git2/config.h
View File

@ -350,7 +350,7 @@ GIT_EXTERN(int) git_config_get_multivar_foreach(const git_config *cfg, const cha
* @param regexp regular expression to filter which variables we're
* interested in. Use NULL to indicate all
*/
GIT_EXTERN(int) git_config_get_multivar(git_config_iterator **out, const git_config *cfg, const char *name, const char *regexp);
GIT_EXTERN(int) git_config_multivar_iterator_new(git_config_iterator **out, const git_config *cfg, const char *name, const char *regexp);
/**
* Return the current entry and advance the iterator

2
include/git2/sys/config.h
View File

@ -58,8 +58,6 @@ struct git_config_backend {
/* Open means open the file/database and parse if necessary */
int (*open)(struct git_config_backend *, git_config_level_t level);
int (*get)(const struct git_config_backend *, const char *key, const git_config_entry **entry);
int (*get_multivar_foreach)(struct git_config_backend *, const char *key, const char *regexp, git_config_foreach_cb callback, void *payload);
int (*get_multivar)(git_config_iterator **, struct git_config_backend *, const char *name, const char *regexp);
int (*set)(struct git_config_backend *, const char *key, const char *value);
int (*set_multivar)(git_config_backend *cfg, const char *name, const char *regexp, const char *value);
int (*del)(struct git_config_backend *, const char *key);

123
src/config.c
View File

@ -747,7 +747,7 @@ int git_config_get_multivar_foreach(
git_config_iterator *iter;
git_config_entry *entry;
if ((err = git_config_get_multivar(&iter, cfg, name, regexp)) < 0)
if ((err = git_config_multivar_iterator_new(&iter, cfg, name, regexp)) < 0)
return err;
found = 0;
@ -771,92 +771,82 @@ int git_config_get_multivar_foreach(
typedef struct {
git_config_iterator parent;
git_config_iterator *current;
git_config_iterator *iter;
char *name;
char *regexp;
const git_config *cfg;
size_t i;
regex_t regex;
int have_regex;
} multivar_iter;
static int multivar_iter_next(git_config_entry **entry, git_config_iterator *_iter)
{
multivar_iter *iter = (multivar_iter *) _iter;
git_config_iterator *current = iter->current;
file_internal *internal;
git_config_backend *backend;
size_t i;
int error = 0;
if (current != NULL &&
(error = current->next(entry, current)) == 0) {
return 0;
}
if (error < 0 && error != GIT_ITEROVER)
return error;
do {
if (find_next_backend(&i, iter->cfg, iter->i) < 0)
return GIT_ITEROVER;
internal = git_vector_get(&iter->cfg->files, i - 1);
backend = internal->file;
iter->i = i - 1;
if (iter->current)
iter->current->free(current);
iter->current = NULL;
error = backend->get_multivar(&iter->current, backend, iter->name, iter->regexp);
if (error == GIT_ENOTFOUND)
while ((error = iter->iter->next(entry, iter->iter)) == 0) {
if (git__strcmp(iter->name, (*entry)->name))
continue;
if (error < 0)
return error;
if (!iter->have_regex)
return 0;
return iter->current->next(entry, iter->current);
if (regexec(&iter->regex, (*entry)->value, 0, NULL, 0) == 0)
return 0;
}
} while(1);
return GIT_ITEROVER;
return error;
}
void multivar_iter_free(git_config_iterator *_iter)
{
multivar_iter *iter = (multivar_iter *) _iter;
if (iter->current)
iter->current->free(iter->current);
iter->iter->free(iter->iter);
git__free(iter->name);
git__free(iter->regexp);
regfree(&iter->regex);
git__free(iter);
}
int git_config_get_multivar(git_config_iterator **out, const git_config *cfg, const char *name, const char *regexp)
int git_config_multivar_iterator_new(git_config_iterator **out, const git_config *cfg, const char *name, const char *regexp)
{
multivar_iter *iter;
multivar_iter *iter = NULL;
git_config_iterator *inner = NULL;
int error;
if ((error = git_config_iterator_new(&inner, cfg)) < 0)
return error;
iter = git__calloc(1, sizeof(multivar_iter));
GITERR_CHECK_ALLOC(iter);
iter->name = git__strdup(name);
GITERR_CHECK_ALLOC(iter->name);
if ((error = git_config__normalize_name(name, &iter->name)) < 0)
goto on_error;
if (regexp != NULL) {
iter->regexp = git__strdup(regexp);
GITERR_CHECK_ALLOC(iter->regexp);
error = regcomp(&iter->regex, regexp, REG_EXTENDED);
if (error < 0) {
giterr_set_regex(&iter->regex, error);
error = -1;
regfree(&iter->regex);
goto on_error;
}
iter->have_regex = 1;
}
iter->iter = inner;
iter->parent.free = multivar_iter_free;
iter->parent.next = multivar_iter_next;
iter->i = cfg->files.length;
iter->cfg = cfg;
*out = (git_config_iterator *) iter;
return 0;
on_error:
inner->free(inner);
git__free(iter);
return error;
}
int git_config_set_multivar(git_config *cfg, const char *name, const char *regexp, const char *value)
@ -1125,6 +1115,41 @@ fail_parse:
return -1;
}
/* Take something the user gave us and make it nice for our hash function */
int git_config__normalize_name(const char *in, char **out)
{
char *name, *fdot, *ldot;
assert(in && out);
name = git__strdup(in);
GITERR_CHECK_ALLOC(name);
fdot = strchr(name, '.');
ldot = strrchr(name, '.');
if (fdot == NULL || fdot == name || ldot == NULL || !ldot[1])
goto invalid;
/* Validate and downcase up to first dot and after last dot */
if (git_config_file_normalize_section(name, fdot) < 0 ||
git_config_file_normalize_section(ldot + 1, NULL) < 0)
goto invalid;
/* If there is a middle range, make sure it doesn't have newlines */
while (fdot < ldot)
if (*fdot++ == '\n')
goto invalid;
*out = name;
return 0;
invalid:
git__free(name);
giterr_set(GITERR_CONFIG, "Invalid config item name '%s'", in);
return GIT_EINVALIDSPEC;
}
struct rename_data {
git_config *config;
git_buf *name;

3
src/config.h
View File

@ -49,4 +49,7 @@ extern int git_config_rename_section(
*/
extern int git_config_file__ondisk(struct git_config_backend **out, const char *path);
extern int git_config__normalize_name(const char *in, char **out);
#endif

201
src/config_file.c
View File

@ -136,41 +136,6 @@ int git_config_file_normalize_section(char *start, char *end)
return 0;
}
/* Take something the user gave us and make it nice for our hash function */
static int normalize_name(const char *in, char **out)
{
char *name, *fdot, *ldot;
assert(in && out);
name = git__strdup(in);
GITERR_CHECK_ALLOC(name);
fdot = strchr(name, '.');
ldot = strrchr(name, '.');
if (fdot == NULL || fdot == name || ldot == NULL || !ldot[1])
goto invalid;
/* Validate and downcase up to first dot and after last dot */
if (git_config_file_normalize_section(name, fdot) < 0 ||
git_config_file_normalize_section(ldot + 1, NULL) < 0)
goto invalid;
/* If there is a middle range, make sure it doesn't have newlines */
while (fdot < ldot)
if (*fdot++ == '\n')
goto invalid;
*out = name;
return 0;
invalid:
git__free(name);
giterr_set(GITERR_CONFIG, "Invalid config item name '%s'", in);
return GIT_EINVALIDSPEC;
}
static void free_vars(git_strmap *values)
{
cvar_t *var = NULL;
@ -314,7 +279,7 @@ static int config_set(git_config_backend *cfg, const char *name, const char *val
khiter_t pos;
int rval, ret;
if ((rval = normalize_name(name, &key)) < 0)
if ((rval = git_config__normalize_name(name, &key)) < 0)
return rval;
/*
@ -397,7 +362,7 @@ static int config_get(const git_config_backend *cfg, const char *name, const git
khiter_t pos;
int error;
if ((error = normalize_name(name, &key)) < 0)
if ((error = git_config__normalize_name(name, &key)) < 0)
return error;
pos = git_strmap_lookup_index(b->values, key);
@ -412,162 +377,6 @@ static int config_get(const git_config_backend *cfg, const char *name, const git
return 0;
}
typedef struct {
git_config_iterator parent;
cvar_t *var;
regex_t regex;
int have_regex;
} foreach_iter;
static void foreach_iter_free(git_config_iterator *_iter)
{
foreach_iter *iter = (foreach_iter *) _iter;
if (iter->have_regex)
regfree(&iter->regex);
git__free(iter);
}
static int foreach_iter_next(git_config_entry **out, git_config_iterator *_iter)
{
foreach_iter *iter = (foreach_iter *) _iter;
cvar_t* var = iter->var;
if (var == NULL)
return GIT_ITEROVER;
if (!iter->have_regex) {
*out = var->entry;
iter->var = var->next;
return 0;
}
/* For the regex case, we must loop until we find something we like */
do {
git_config_entry *entry = var->entry;
regex_t *regex = &iter->regex;;
if (regexec(regex, entry->value, 0, NULL, 0) == 0) {
*out = entry;
iter->var = var->next;
return 0;
}
var = var->next;
} while(var != NULL);
return GIT_ITEROVER;
}
static int config_get_multivar(git_config_iterator **out, git_config_backend *_backend,
const char *name, const char *regexp)
{
foreach_iter *iter;
diskfile_backend *b = (diskfile_backend *) _backend;
char *key;
khiter_t pos;
int error = 0;
if ((error = normalize_name(name, &key)) < 0)
return error;
pos = git_strmap_lookup_index(b->values, key);
git__free(key);
if (!git_strmap_valid_index(b->values, pos))
return GIT_ENOTFOUND;
iter = git__calloc(1, sizeof(foreach_iter));
GITERR_CHECK_ALLOC(iter);
iter->var = git_strmap_value_at(b->values, pos);
if (regexp != NULL) {
int result;
result = regcomp(&iter->regex, regexp, REG_EXTENDED);
if (result < 0) {
giterr_set_regex(&iter->regex, result);
regfree(&iter->regex);
return -1;
}
iter->have_regex = 1;
}
iter->parent.free = foreach_iter_free;
iter->parent.next = foreach_iter_next;
*out = (git_config_iterator *) iter;
return 0;
}
static int config_get_multivar_foreach(
git_config_backend *cfg,
const char *name,
const char *regex_str,
int (*fn)(const git_config_entry *, void *),
void *data)
{
cvar_t *var;
diskfile_backend *b = (diskfile_backend *)cfg;
char *key;
khiter_t pos;
int error;
if ((error = normalize_name(name, &key)) < 0)
return error;
pos = git_strmap_lookup_index(b->values, key);
git__free(key);
if (!git_strmap_valid_index(b->values, pos))
return GIT_ENOTFOUND;
var = git_strmap_value_at(b->values, pos);
if (regex_str != NULL) {
regex_t regex;
int result;
/* regex matching; build the regex */
result = regcomp(&regex, regex_str, REG_EXTENDED);
if (result < 0) {
giterr_set_regex(&regex, result);
regfree(&regex);
return -1;
}
/* and throw the callback only on the variables that
* match the regex */
do {
if (regexec(&regex, var->entry->value, 0, NULL, 0) == 0) {
/* early termination by the user is not an error;
* just break and return successfully */
if (fn(var->entry, data))
break;
}
var = var->next;
} while (var != NULL);
regfree(&regex);
} else {
/* no regex; go through all the variables */
do {
/* early termination by the user is not an error;
* just break and return successfully */
if (fn(var->entry, data) < 0)
break;
var = var->next;
} while (var != NULL);
}
return 0;
}
static int config_set_multivar(
git_config_backend *cfg, const char *name, const char *regexp, const char *value)
{
@ -581,7 +390,7 @@ static int config_set_multivar(
assert(regexp);
if ((result = normalize_name(name, &key)) < 0)
if ((result = git_config__normalize_name(name, &key)) < 0)
return result;
pos = git_strmap_lookup_index(b->values, key);
@ -654,7 +463,7 @@ static int config_delete(git_config_backend *cfg, const char *name)
int result;
khiter_t pos;
if ((result = normalize_name(name, &key)) < 0)
if ((result = git_config__normalize_name(name, &key)) < 0)
return result;
pos = git_strmap_lookup_index(b->values, key);
@ -694,8 +503,6 @@ int git_config_file__ondisk(git_config_backend **out, const char *path)
backend->parent.open = config_open;
backend->parent.get = config_get;
backend->parent.get_multivar_foreach = config_get_multivar_foreach;
backend->parent.get_multivar = config_get_multivar;
backend->parent.set = config_set;
backend->parent.set_multivar = config_set_multivar;
backend->parent.del = config_delete;

2
tests-clar/config/multivar.c
View File

@ -76,7 +76,7 @@ static void check_get_multivar(git_config *cfg, int expected)
git_config_entry *entry;
int n = 0;
cl_git_pass(git_config_get_multivar(&iter, cfg, _name, NULL));
cl_git_pass(git_config_multivar_iterator_new(&iter, cfg, _name, NULL));
while (git_config_next(&entry, iter) == 0)
n++;