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-rw-r--r--src/util/pacsort.c204
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;
generated by cgit v1.2.3-54-g00ecf (git 2.44.0) at 2024-05-05 13:13:58 +0000