commit: 0bbdb3f1328dcd0dd91c1ea502da3ba3e1fd364d Author: Fabian Groffen <grobian <AT> gentoo <DOT> org> AuthorDate: Sun May 5 08:46:47 2019 +0000 Commit: Fabian Groffen <grobian <AT> gentoo <DOT> org> CommitDate: Sun May 5 08:46:47 2019 +0000 URL: https://gitweb.gentoo.org/proj/portage-utils.git/commit/?id=0bbdb3f1
libq/cache: add support for reading metadata.xml currently only one field is extracted: email Bug: https://bugs.gentoo.org/685052 Signed-off-by: Fabian Groffen <grobian <AT> gentoo.org> libq/cache.c | 99 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++-- libq/cache.h | 9 ++++++ 2 files changed, 106 insertions(+), 2 deletions(-) diff --git a/libq/cache.c b/libq/cache.c index a8b4ede..c0ea85e 100644 --- a/libq/cache.c +++ b/libq/cache.c @@ -167,6 +167,9 @@ cache_next_pkg(cache_cat_ctx *cat_ctx) ctx->ebuilddir_pkg_ctx = NULL; return NULL; } + + /* "zap" the pkg such that it looks like CAT/P */ + ctx->ebuilddir_cat_ctx->name = cat_ctx->name; } ret = q_vdb_next_pkg(ctx->ebuilddir_cat_ctx); @@ -178,8 +181,6 @@ cache_next_pkg(cache_cat_ctx *cat_ctx) cache_close_pkg(ret); ret = NULL; } else { - /* "zap" the pkg such that it looks like CAT/P */ - ret->cat_ctx->name = cat_ctx->name; *p = '\0'; } } @@ -529,6 +530,100 @@ cache_close_meta(cache_pkg_meta *cache) free(cache); } +cache_metadata_xml * +cache_read_metadata(cache_pkg_ctx *pkg_ctx) +{ + cache_ctx *ctx = (cache_ctx *)(pkg_ctx->cat_ctx->ctx); + int fd; + FILE *f; + struct stat s; + char *xbuf; + char *p; + char *q; + size_t len; + cache_metadata_xml *ret = NULL; + struct elist *emailw = NULL; + char buf[_Q_PATH_MAX]; + + /* lame @$$ XML parsing, I don't want to pull in a real parser + * library because we only retrieve one element for now: email + * technically speaking, email may occur only once in a maintainer + * tag, but practically speaking we don't care at all, so we can + * just extract everything between <email> and </email> */ + + if (ctx->cachetype == CACHE_EBUILD) { + fd = openat(pkg_ctx->cat_ctx->fd, "metadata", O_RDONLY | O_CLOEXEC); + } else { + depend_atom *atom; + snprintf(buf, sizeof(buf), "%s/%s", + pkg_ctx->cat_ctx->name, pkg_ctx->name); + atom = atom_explode(buf); + snprintf(buf, sizeof(buf), "../../%s/%s/metadata.xml", + atom->CATEGORY, atom->PN); + atom_implode(atom); + fd = openat(ctx->vdb_fd, buf, O_RDONLY | O_CLOEXEC); + } + + if (fd == -1) + return NULL; + + if ((f = fdopen(fd, "r")) == NULL) { + close(fd); + return NULL; + } + + if (fstat(fd, &s) != 0) { + fclose(f); + return NULL; + } + + len = sizeof(*ret) + s.st_size + 1; + p = xbuf = xzalloc(len); + if ((off_t)fread(p, 1, s.st_size, f) != s.st_size) { + free(p); + fclose(f); + pkg_ctx->fd = -1; + return NULL; + } + + ret = xmalloc(sizeof(*ret)); + ret->email = NULL; + + while ((q = strstr(p, "<email>")) != NULL) { + p = q + sizeof("<email>") - 1; + if ((q = strstr(p, "</email>")) == NULL) + break; + *q = '\0'; + rmspace(p); + if (emailw == NULL) { + emailw = ret->email = xmalloc(sizeof(*emailw)); + } else { + emailw = emailw->next = xmalloc(sizeof(*emailw)); + } + emailw->next = NULL; + emailw->addr = xstrdup(p); + p = q + 1; + } + + free(xbuf); + fclose(f); + return ret; +} + +void +cache_close_metadata(cache_metadata_xml *meta_ctx) +{ + struct elist *e; + while (meta_ctx->email != NULL) { + e = meta_ctx->email; + free(e->addr); + e = e->next; + free(meta_ctx->email); + meta_ctx->email = e; + } + free(meta_ctx); +} + void cache_close_pkg(cache_pkg_ctx *pkg_ctx) { diff --git a/libq/cache.h b/libq/cache.h index 74f45b8..2ad2e78 100644 --- a/libq/cache.h +++ b/libq/cache.h @@ -43,6 +43,13 @@ typedef struct { char *_md5_; } cache_pkg_meta; +typedef struct { + struct elist { + char *addr; + struct elist *next; + } *email; +} cache_metadata_xml; + typedef int (cache_pkg_cb)(cache_pkg_ctx *, void *priv); typedef int (cache_cat_filter)(cache_cat_ctx *, void *priv); @@ -55,6 +62,8 @@ cache_pkg_ctx *cache_open_pkg(cache_cat_ctx *cat_ctx, const char *name); cache_pkg_ctx *cache_next_pkg(cache_cat_ctx *cat_ctx); cache_pkg_meta *cache_pkg_read(cache_pkg_ctx *pkg_ctx); void cache_close_meta(cache_pkg_meta *cache); +cache_metadata_xml *cache_read_metadata(cache_pkg_ctx *pkg_ctx); +void cache_close_metadata(cache_metadata_xml *meta_ctx); void cache_close_pkg(cache_pkg_ctx *pkg_ctx); int cache_foreach_pkg(const char *sroot, const char *portdir, cache_pkg_cb callback, void *priv, cache_cat_filter filter);
