git-p4: Unset P4DIFF environment variable when using 'p4 -du diff'
[gitweb.git] / builtin-shortlog.c
index f08095bc91b92ad93560459d060259bd5df52c4a..b22b0edd65eefacabb648962b9c20c695609a3f5 100644 (file)
@@ -6,13 +6,11 @@
 #include "revision.h"
 #include "utf8.h"
 #include "mailmap.h"
+#include "shortlog.h"
 
 static const char shortlog_usage[] =
 "git-shortlog [-n] [-s] [-e] [<commit-id>... ]";
 
-static char *common_repo_prefix;
-static int email;
-
 static int compare_by_number(const void *a1, const void *a2)
 {
        const struct path_list_item *i1 = a1, *i2 = a2;
@@ -26,13 +24,11 @@ static int compare_by_number(const void *a1, const void *a2)
                return -1;
 }
 
-static struct path_list mailmap = {NULL, 0, 0, 0};
-
-static void insert_one_record(struct path_list *list,
+static void insert_one_record(struct shortlog *log,
                              const char *author,
                              const char *oneline)
 {
-       const char *dot3 = common_repo_prefix;
+       const char *dot3 = log->common_repo_prefix;
        char *buffer, *p;
        struct path_list_item *item;
        struct path_list *onelines;
@@ -47,7 +43,7 @@ static void insert_one_record(struct path_list *list,
        eoemail = strchr(boemail, '>');
        if (!eoemail)
                return;
-       if (!map_email(&mailmap, boemail+1, namebuf, sizeof(namebuf))) {
+       if (!map_email(&log->mailmap, boemail+1, namebuf, sizeof(namebuf))) {
                while (author < boemail && isspace(*author))
                        author++;
                for (len = 0;
@@ -61,14 +57,14 @@ static void insert_one_record(struct path_list *list,
        else
                len = strlen(namebuf);
 
-       if (email) {
+       if (log->email) {
                size_t room = sizeof(namebuf) - len - 1;
                int maillen = eoemail - boemail + 1;
                snprintf(namebuf + len, room, " %.*s", maillen, boemail);
        }
 
        buffer = xstrdup(namebuf);
-       item = path_list_insert(buffer, list);
+       item = path_list_insert(buffer, &log->list);
        if (item->util == NULL)
                item->util = xcalloc(1, sizeof(struct path_list));
        else
@@ -115,7 +111,7 @@ static void insert_one_record(struct path_list *list,
        onelines->items[onelines->nr++].path = buffer;
 }
 
-static void read_from_stdin(struct path_list *list)
+static void read_from_stdin(struct shortlog *log)
 {
        char author[1024], oneline[1024];
 
@@ -129,38 +125,43 @@ static void read_from_stdin(struct path_list *list)
                while (fgets(oneline, sizeof(oneline), stdin) &&
                       oneline[0] == '\n')
                        ; /* discard blanks */
-               insert_one_record(list, author + 8, oneline);
+               insert_one_record(log, author + 8, oneline);
        }
 }
 
-static void get_from_rev(struct rev_info *rev, struct path_list *list)
+void shortlog_add_commit(struct shortlog *log, struct commit *commit)
 {
-       struct commit *commit;
-
-       prepare_revision_walk(rev);
-       while ((commit = get_revision(rev)) != NULL) {
-               const char *author = NULL, *buffer;
+       const char *author = NULL, *buffer;
 
-               buffer = commit->buffer;
-               while (*buffer && *buffer != '\n') {
-                       const char *eol = strchr(buffer, '\n');
+       buffer = commit->buffer;
+       while (*buffer && *buffer != '\n') {
+               const char *eol = strchr(buffer, '\n');
 
-                       if (eol == NULL)
-                               eol = buffer + strlen(buffer);
-                       else
-                               eol++;
+               if (eol == NULL)
+                       eol = buffer + strlen(buffer);
+               else
+                       eol++;
 
-                       if (!prefixcmp(buffer, "author "))
-                               author = buffer + 7;
-                       buffer = eol;
-               }
-               if (!author)
-                       die("Missing author: %s",
-                           sha1_to_hex(commit->object.sha1));
-               if (*buffer)
-                       buffer++;
-               insert_one_record(list, author, !*buffer ? "<none>" : buffer);
+               if (!prefixcmp(buffer, "author "))
+                       author = buffer + 7;
+               buffer = eol;
        }
+       if (!author)
+               die("Missing author: %s",
+                   sha1_to_hex(commit->object.sha1));
+       if (*buffer)
+               buffer++;
+       insert_one_record(log, author, !*buffer ? "<none>" : buffer);
+}
+
+static void get_from_rev(struct rev_info *rev, struct shortlog *log)
+{
+       struct commit *commit;
+
+       if (prepare_revision_walk(rev))
+               die("revision walk setup failed");
+       while ((commit = get_revision(rev)) != NULL)
+               shortlog_add_commit(log, commit);
 }
 
 static int parse_uint(char const **arg, int comma)
@@ -212,29 +213,38 @@ static void parse_wrap_args(const char *arg, int *in1, int *in2, int *wrap)
                die(wrap_arg_usage);
 }
 
+void shortlog_init(struct shortlog *log)
+{
+       memset(log, 0, sizeof(*log));
+
+       read_mailmap(&log->mailmap, ".mailmap", &log->common_repo_prefix);
+
+       log->list.strdup_paths = 1;
+       log->wrap = DEFAULT_WRAPLEN;
+       log->in1 = DEFAULT_INDENT1;
+       log->in2 = DEFAULT_INDENT2;
+}
+
 int cmd_shortlog(int argc, const char **argv, const char *prefix)
 {
+       struct shortlog log;
        struct rev_info rev;
-       struct path_list list = { NULL, 0, 0, 1 };
-       int i, j, sort_by_number = 0, summary = 0;
-       int wrap_lines = 0;
-       int wrap = DEFAULT_WRAPLEN;
-       int in1 = DEFAULT_INDENT1;
-       int in2 = DEFAULT_INDENT2;
+
+       shortlog_init(&log);
 
        /* since -n is a shadowed rev argument, parse our args first */
        while (argc > 1) {
                if (!strcmp(argv[1], "-n") || !strcmp(argv[1], "--numbered"))
-                       sort_by_number = 1;
+                       log.sort_by_number = 1;
                else if (!strcmp(argv[1], "-s") ||
                                !strcmp(argv[1], "--summary"))
-                       summary = 1;
+                       log.summary = 1;
                else if (!strcmp(argv[1], "-e") ||
                         !strcmp(argv[1], "--email"))
-                       email = 1;
+                       log.email = 1;
                else if (!prefixcmp(argv[1], "-w")) {
-                       wrap_lines = 1;
-                       parse_wrap_args(argv[1], &in1, &in2, &wrap);
+                       log.wrap_lines = 1;
+                       parse_wrap_args(argv[1], &log.in1, &log.in2, &log.wrap);
                }
                else if (!strcmp(argv[1], "-h") || !strcmp(argv[1], "--help"))
                        usage(shortlog_usage);
@@ -248,34 +258,38 @@ int cmd_shortlog(int argc, const char **argv, const char *prefix)
        if (argc > 1)
                die ("unrecognized argument: %s", argv[1]);
 
-       read_mailmap(&mailmap, ".mailmap", &common_repo_prefix);
-
        /* assume HEAD if from a tty */
        if (!rev.pending.nr && isatty(0))
                add_head_to_pending(&rev);
        if (rev.pending.nr == 0) {
-               read_from_stdin(&list);
+               read_from_stdin(&log);
        }
        else
-               get_from_rev(&rev, &list);
+               get_from_rev(&rev, &log);
 
-       if (sort_by_number)
-               qsort(list.items, list.nr, sizeof(struct path_list_item),
-                       compare_by_number);
+       shortlog_output(&log);
+       return 0;
+}
 
-       for (i = 0; i < list.nr; i++) {
-               struct path_list *onelines = list.items[i].util;
+void shortlog_output(struct shortlog *log)
+{
+       int i, j;
+       if (log->sort_by_number)
+               qsort(log->list.items, log->list.nr, sizeof(struct path_list_item),
+                       compare_by_number);
+       for (i = 0; i < log->list.nr; i++) {
+               struct path_list *onelines = log->list.items[i].util;
 
-               if (summary) {
-                       printf("%6d\t%s\n", onelines->nr, list.items[i].path);
+               if (log->summary) {
+                       printf("%6d\t%s\n", onelines->nr, log->list.items[i].path);
                } else {
-                       printf("%s (%d):\n", list.items[i].path, onelines->nr);
+                       printf("%s (%d):\n", log->list.items[i].path, onelines->nr);
                        for (j = onelines->nr - 1; j >= 0; j--) {
                                const char *msg = onelines->items[j].path;
 
-                               if (wrap_lines) {
-                                       int col = print_wrapped_text(msg, in1, in2, wrap);
-                                       if (col != wrap)
+                               if (log->wrap_lines) {
+                                       int col = print_wrapped_text(msg, log->in1, log->in2, log->wrap);
+                                       if (col != log->wrap)
                                                putchar('\n');
                                }
                                else
@@ -287,13 +301,11 @@ int cmd_shortlog(int argc, const char **argv, const char *prefix)
                onelines->strdup_paths = 1;
                path_list_clear(onelines, 1);
                free(onelines);
-               list.items[i].util = NULL;
+               log->list.items[i].util = NULL;
        }
 
-       list.strdup_paths = 1;
-       path_list_clear(&list, 1);
-       mailmap.strdup_paths = 1;
-       path_list_clear(&mailmap, 1);
-
-       return 0;
+       log->list.strdup_paths = 1;
+       path_list_clear(&log->list, 1);
+       log->mailmap.strdup_paths = 1;
+       path_list_clear(&log->mailmap, 1);
 }