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config: initial multivar iterator

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This commit is contained in:
Carlos Martín Nieto 2013-08-08 16:18:07 +02:00
parent eba7399251
commit 3a7ffc29c9
3 changed files with 112 additions and 2 deletions
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6
include/git2/sys/config.h
View File

@ -36,9 +36,10 @@ struct git_config_iterator {
unsigned int flags;
/**
* Return the current entry and advance the iterator
* Return the current entry and advance the iterator. The
* memory belongs to the library.
*/
int (*next)(git_config_entry *entry, git_config_iterator *iter);
int (*next)(const git_config_entry *entry, git_config_iterator *iter);
/**
* Free the iterator
@ -58,6 +59,7 @@ struct git_config_backend {
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);

18
src/config.c
View File

@ -602,6 +602,24 @@ int git_config_get_multivar_foreach(
return (ret == GIT_ENOTFOUND) ? config_error_notfound(name) : 0;
}
struct config_multivar_iter {
git_config_iterator parent;
};
int git_config_get_multivar(git_config_iterator **out, const git_config *cfg, const char *name, const char *regexp)
{
struct config_multivar_iter *iter;
iter = git__calloc(1, sizeof(struct config_multivar_iter));
GITERR_CHECK_ALLOC(iter);
/* get multivar from each */
*out = (git_config_iterator *) iter;
return 0;
}
int git_config_set_multivar(git_config *cfg, const char *name, const char *regexp, const char *value)
{
git_config_backend *file;

90
src/config_file.c
View File

@ -416,6 +416,95 @@ 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;
return 0;
}
} 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,
@ -607,6 +696,7 @@ 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;