diff options
author | Russell Belfer <rb@github.com> | 2013-09-11 23:45:37 +0400 |
---|---|---|
committer | Russell Belfer <rb@github.com> | 2013-09-17 20:31:45 +0400 |
commit | 0646634e2fea3e0adf724e0b7b15118574b589fc (patch) | |
tree | 6c3f480fc2a311dee6127b5af0dd32ff2c600677 /src/filter.c | |
parent | a3aa5f4d5dcbe038f1d1c5ff40eed29d27953fbe (diff) |
Update filter registry code
This updates the git filter registry to be a little cleaner and
plugs some memory leaks.
Diffstat (limited to 'src/filter.c')
-rw-r--r-- | src/filter.c | 167 |
1 files changed, 113 insertions, 54 deletions
diff --git a/src/filter.c b/src/filter.c index 050014671..73c2ceacb 100644 --- a/src/filter.c +++ b/src/filter.c @@ -10,6 +10,7 @@ #include "hash.h" #include "filter.h" #include "repository.h" +#include "global.h" #include "git2/sys/filter.h" #include "git2/config.h" #include "blob.h" @@ -52,10 +53,64 @@ static int filter_def_priority_cmp(const void *a, const void *b) return (pa < pb) ? -1 : (pa > pb) ? 1 : 0; } -static git_vector git__filter_registry = { - 0, filter_def_priority_cmp, NULL, 0, 0 +struct filter_registry { + git_vector filters; }; +static struct filter_registry *git__filter_registry = NULL; + +static void filter_registry_shutdown(void) +{ + struct filter_registry *reg = NULL; + size_t pos; + git_filter_def *fdef; + + if ((reg = git__swap(git__filter_registry, NULL)) == NULL) + return; + + git_vector_foreach(®->filters, pos, fdef) { + if (fdef->initialized && fdef->filter && fdef->filter->shutdown) { + fdef->filter->shutdown(fdef->filter); + fdef->initialized = false; + } + + git__free(fdef->attrdata); + git__free(fdef); + } + + git_vector_free(®->filters); + git__free(reg); +} + +static int filter_registry_initialize(void) +{ + int error = 0; + struct filter_registry *reg; + + if (git__filter_registry) + return 0; + + reg = git__calloc(1, sizeof(struct filter_registry)); + GITERR_CHECK_ALLOC(reg); + + if ((error = git_vector_init( + ®->filters, 2, filter_def_priority_cmp)) < 0) + goto cleanup; + + reg = git__compare_and_swap(&git__filter_registry, NULL, reg); + if (reg != NULL) + goto cleanup; + + git__on_shutdown(filter_registry_shutdown); + + return git_filter_register(GIT_FILTER_CRLF, git_crlf_filter_new(), 0); + +cleanup: + git_vector_free(®->filters); + git__free(reg); + return error; +} + static int filter_def_scan_attrs( git_buf *attrs, size_t *nattr, size_t *nmatch, const char *attr_str) { @@ -122,6 +177,29 @@ static void filter_def_set_attrs(git_filter_def *fdef) } } +static int filter_def_name_key_check(const void *key, const void *fdef) +{ + const char *name = + fdef ? ((const git_filter_def *)fdef)->filter_name : NULL; + return name ? -1 : git__strcmp(key, name); +} + +static int filter_registry_find(size_t *pos, const char *name) +{ + return git_vector_search2( + pos, &git__filter_registry->filters, filter_def_name_key_check, name); +} + +static git_filter_def *filter_registry_lookup(size_t *pos, const char *name) +{ + git_filter_def *fdef = NULL; + + if (!filter_registry_find(pos, name)) + fdef = git_vector_get(&git__filter_registry->filters, *pos); + + return fdef; +} + int git_filter_register( const char *name, git_filter *filter, int priority) { @@ -129,7 +207,10 @@ int git_filter_register( size_t nattr = 0, nmatch = 0; git_buf attrs = GIT_BUF_INIT; - if (git_filter_lookup(name) != NULL) { + if (filter_registry_initialize() < 0) + return -1; + + if (!filter_registry_find(NULL, name)) { giterr_set( GITERR_FILTER, "Attempt to reregister existing filter '%s'", name); return -1; @@ -151,48 +232,13 @@ int git_filter_register( filter_def_set_attrs(fdef); - if (git_vector_insert(&git__filter_registry, fdef) < 0) { + if (git_vector_insert(&git__filter_registry->filters, fdef) < 0) { git__free(fdef->attrdata); git__free(fdef); return -1; } - git_vector_sort(&git__filter_registry); - return 0; -} - -static int filter_def_name_key_check(const void *key, const void *fdef) -{ - const char *name = - fdef ? ((const git_filter_def *)fdef)->filter_name : NULL; - return name ? -1 : git__strcmp(key, name); -} - -static git_filter_def *filter_find_by_name(size_t *pos, const char *name) -{ - git_filter_def *fdef = NULL; - - if (!git_vector_search2( - pos, &git__filter_registry, filter_def_name_key_check, name)) - fdef = git_vector_get(&git__filter_registry, *pos); - - return fdef; -} - -static int filter_initialize(git_filter_def *fdef) -{ - int error = 0; - - if (!fdef->initialized && - fdef->filter && - fdef->filter->initialize && - (error = fdef->filter->initialize(fdef->filter)) < 0) - { - git_filter_unregister(fdef->filter_name); - return error; - } - - fdef->initialized = true; + git_vector_sort(&git__filter_registry->filters); return 0; } @@ -207,12 +253,12 @@ int git_filter_unregister(const char *name) return -1; } - if ((fdef = filter_find_by_name(&pos, name)) == NULL) { + if ((fdef = filter_registry_lookup(&pos, name)) == NULL) { giterr_set(GITERR_FILTER, "Cannot find filter '%s' to unregister", name); return GIT_ENOTFOUND; } - (void)git_vector_remove(&git__filter_registry, pos); + (void)git_vector_remove(&git__filter_registry->filters, pos); if (fdef->initialized && fdef->filter && fdef->filter->shutdown) { fdef->filter->shutdown(fdef->filter); @@ -225,12 +271,33 @@ int git_filter_unregister(const char *name) return 0; } +static int filter_initialize(git_filter_def *fdef) +{ + int error = 0; + + if (!fdef->initialized && + fdef->filter && + fdef->filter->initialize && + (error = fdef->filter->initialize(fdef->filter)) < 0) + { + /* auto-unregister if initialize fails */ + git_filter_unregister(fdef->filter_name); + return error; + } + + fdef->initialized = true; + return 0; +} + git_filter *git_filter_lookup(const char *name) { size_t pos; - git_filter_def *fdef = filter_find_by_name(&pos, name); + git_filter_def *fdef; + + if (filter_registry_initialize() < 0) + return NULL; - if (!fdef) + if ((fdef = filter_registry_lookup(&pos, name)) == NULL) return NULL; if (!fdef->initialized && filter_initialize(fdef) < 0) @@ -239,14 +306,6 @@ git_filter *git_filter_lookup(const char *name) return fdef->filter; } -static int filter_load_defaults(void) -{ - if (!git_vector_length(&git__filter_registry)) - return git_filter_register(GIT_FILTER_CRLF, git_crlf_filter_new(), 0); - - return 0; -} - git_repository *git_filter_source_repo(const git_filter_source *src) { return src->repo; @@ -345,14 +404,14 @@ int git_filter_list_load( size_t idx; git_filter_def *fdef; - if (filter_load_defaults() < 0) + if (filter_registry_initialize() < 0) return -1; src.repo = repo; src.path = path; src.mode = mode; - git_vector_foreach(&git__filter_registry, idx, fdef) { + git_vector_foreach(&git__filter_registry->filters, idx, fdef) { const char **values = NULL; void *payload = NULL; |