diff options
Diffstat (limited to 'src/util')
| -rw-r--r-- | src/util/pacsort.c | 204 |
1 files changed, 146 insertions, 58 deletions
diff --git a/src/util/pacsort.c b/src/util/pacsort.c index 86f2fc68..665f2180 100644 --- a/src/util/pacsort.c +++ b/src/util/pacsort.c @@ -28,6 +28,15 @@ #define DELIM ' ' +#ifndef MIN +#define MIN(a, b) \ + __extension__({ \ + __typeof__(a) _a = (a); \ + __typeof__(b) _b = (b); \ + _a < _b ? _a : _b; \ + }) +#endif + struct buffer_t { char *mem; size_t len; @@ -35,11 +44,22 @@ struct buffer_t { }; struct list_t { - char **list; + void **list; size_t count; size_t maxcount; }; +struct input_t { + char *data; + int is_file; + + const char *pkgname; + size_t pkgname_len; + + const char *pkgver; + size_t pkgver_len; +}; + static struct options_t { int order; int sortkey; @@ -147,9 +167,9 @@ static int list_grow(struct list_t *list) return 0; } -static int list_add(struct list_t *list, char *name) +static int list_add(struct list_t *list, void *obj) { - if(!list || !name) { + if(!list || !obj) { return 1; } @@ -159,13 +179,13 @@ static int list_add(struct list_t *list, char *name) } } - list->list[list->count] = name; + list->list[list->count] = obj; list->count++; return 0; } -static void list_free(struct list_t *list) +static void list_free(struct list_t *list, void (*freefn)(void *)) { size_t i; @@ -175,23 +195,86 @@ static void list_free(struct list_t *list) if(list->list) { for(i = 0; i < list->count; i++) { - free(list->list[i]); + freefn(list->list[i]); } free(list->list); } free(list); } +static void input_free(void *p) +{ + struct input_t *in = p; + + if(in == NULL) { + return; + } + + free(in->data); + free(in); +} + +static struct input_t *input_new(const char *path, int pathlen) +{ + const char *pkgver_end; + const char *slash; + struct input_t *in; + + in = calloc(1, sizeof(struct input_t)); + if(in == NULL) { + return NULL; + } + + in->data = strndup(path, pathlen); + if(in->data == NULL) { + return NULL; + } + + in->is_file = fnmatch("*-*.pkg.tar.?z", in->data, 0) == 0; + if(!in->is_file) { + return in; + } + + /* for files, we parse the pkgname and pkgrel from the full filename. */ + + slash = strrchr(in->data, '/'); + if(slash == NULL) { + in->pkgname = in->data; + } else { + in->pkgname = slash + 1; + } + + pkgver_end = strrchr(in->pkgname, '-'); + + /* read backwards through pkgrel */ + for(in->pkgver = pkgver_end - 1; + in->pkgver > in->pkgname && *in->pkgver != '-'; + --in->pkgver) + ; + /* read backwards through pkgver */ + for(--in->pkgver; + in->pkgver > in->pkgname && *in->pkgver != '-'; + --in->pkgver) + ; + ++in->pkgver; + + in->pkgname_len = in->pkgver - in->pkgname - 1; + in->pkgver_len = pkgver_end - in->pkgver; + + return in; +} + static char *explode(struct buffer_t *buffer, struct list_t *list) { - char *name, *ptr, *end; + char *ptr, *end; const char linedelim = opts.null ? '\0' : '\n'; + struct input_t *meta; ptr = buffer->mem; while((end = memchr(ptr, linedelim, &buffer->mem[buffer->len] - ptr))) { *end = '\0'; - name = strdup(ptr); - list_add(list, name); + meta = input_new(ptr, end - ptr); + list_add(list, meta); ptr = end + 1; } @@ -229,8 +312,8 @@ static int splitfile(FILE *stream, struct buffer_t *buffer, struct list_t *list) } if(buffer->len) { - char *name = strndup(buffer->mem, buffer->len + 1); - if(list_add(list, name) != 0) { + struct input_t *meta = input_new(buffer->mem, buffer->len + 1); + if(meta == NULL || list_add(list, meta) != 0) { return 1; } } @@ -256,57 +339,61 @@ static const char *nth_column(const char *string) return prev; } -static int vercmp(const void *p1, const void *p2) +static int compare_versions(const char *v1, const char *v2) { - const char *name1, *name2; - char *fn1 = NULL, *fn2 = NULL; - int r; - - name1 = *(const char **)p1; - name2 = *(const char **)p2; - - /* if we're operating in file mode, we modify the strings under certain - * conditions to appease alpm_pkg_vercmp(). If and only if both inputs end - * with a suffix that appears to be a package name, we strip the suffix and - * remove any leading paths. This means that strings such as: - * - * /var/cache/pacman/pkg/firefox-18.0-2-x86_64.pkg.tar.xz - * firefox-18.0-2-x86_64.pkg.tar.gz - * - * Will be considered equal by this version comparison - */ - if(opts.filemode) { - if(fnmatch("*-*.pkg.tar.?z", name1, 0) == 0 && - fnmatch("*-*.pkg.tar.?z", name2, 0) == 0) { - const char *start, *end; - - start = strrchr(name1, '/'); - start = start ? start + 1 : name1; - end = strrchr(name1, '-'); - fn1 = strndup(start, end - start); - - start = strrchr(name2, '/'); - start = start ? start + 1 : name2; - end = strrchr(name2, '-'); - fn2 = strndup(start, end - start); - - name1 = fn1; - name2 = fn2; - } - } - if(opts.sortkey == 0) { - r = opts.order * alpm_pkg_vercmp(name1, name2); + return opts.order * alpm_pkg_vercmp(v1, v2); } else { - r = opts.order * alpm_pkg_vercmp(nth_column(name1), nth_column(name2)); + return opts.order * alpm_pkg_vercmp(nth_column(v1), nth_column(v2)); + } +} + +static int compare_files(const struct input_t *meta1, const struct input_t *meta2) +{ + int cmp; + char *verbuf; + const char *v1, *v2; + + /* sort first by package name */ + cmp = memcmp(meta1->pkgname, meta2->pkgname, + MIN(meta1->pkgname_len, meta2->pkgname_len)); + + /* 1) package names differ, sort by package name */ + if(cmp != 0) { + return opts.order * cmp; } - if(opts.filemode) { - free(fn1); - free(fn2); + /* 2) prefixes are the same but length differs, sort by length */ + if(meta1->pkgname_len != meta2->pkgname_len) { + return opts.order * (meta1->pkgname_len - meta2->pkgname_len); } - return r; + /* allocate once with enough space for both pkgver */ + verbuf = calloc(1, meta1->pkgver_len + 1 + meta2->pkgver_len + 1); + memcpy(verbuf, meta1->pkgver, meta1->pkgver_len); + memcpy(&verbuf[meta1->pkgver_len + 1], meta2->pkgver, meta2->pkgver_len); + + /* 3) sort by package version */ + v1 = verbuf; + v2 = verbuf + meta1->pkgver_len + 1; + cmp = compare_versions(v1, v2); + free(verbuf); + + return cmp; +} + +static int vercmp(const void *p1, const void *p2) +{ + const struct input_t *meta1, *meta2; + + meta1 = *(struct input_t **)p1; + meta2 = *(struct input_t **)p2; + + if(opts.filemode && meta1->is_file && meta2->is_file) { + return compare_files(meta1, meta2); + } else { + return compare_versions(meta1->data, meta2->data); + } } static char escape_char(const char *string) @@ -450,13 +537,14 @@ int main(int argc, char *argv[]) if(list->count) { const char linedelim = opts.null ? '\0' : '\n'; - qsort(list->list, list->count, sizeof(char *), vercmp); + qsort(list->list, list->count, sizeof(void *), vercmp); for(i = 0; i < list->count; i++) { - printf("%s%c", list->list[i], linedelim); + const struct input_t *in = list->list[i]; + printf("%s%c", in->data, linedelim); } } - list_free(list); + list_free(list, input_free); buffer_free(buffer); return 0; |