format-patch: use a string_list for headers

In the next patch we'll need to clear the header lists if the user
specifies --no-add-headers or --no-to or --no-cc. This actually cuts
down on the code a bit too.

Signed-off-by: Stephen Boyd <bebarino@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

diff --git a/builtin-log.c b/builtin-log.c
index 5d23a679938e4c0097a479d5f1808aeb21ab7df3..207dd1fa90f120a88c45eb739c2197015007d188 100644 (file)
--- a/builtin-log.c
+++ b/builtin-log.c
@@ -458,35 +458,28 @@ static int auto_number = 1;
 
 static char *default_attach = NULL;
 
-static char **extra_hdr;
-static int extra_hdr_nr;
-static int extra_hdr_alloc;
-
-static char **extra_to;
-static int extra_to_nr;
-static int extra_to_alloc;
-
-static char **extra_cc;
-static int extra_cc_nr;
-static int extra_cc_alloc;
+static struct string_list extra_hdr;
+static struct string_list extra_to;
+static struct string_list extra_cc;
 
 static void add_header(const char *value)
 {
+       struct string_list_item *item;
        int len = strlen(value);
        while (len && value[len - 1] == '\n')
                len--;
+
        if (!strncasecmp(value, "to: ", 4)) {
-               ALLOC_GROW(extra_to, extra_to_nr + 1, extra_to_alloc);
-               extra_to[extra_to_nr++] = xstrndup(value + 4, len - 4);
-               return;
+               item = string_list_append(value + 4, &extra_to);
+               len -= 4;
+       } else if (!strncasecmp(value, "cc: ", 4)) {
+               item = string_list_append(value + 4, &extra_cc);
+               len -= 4;
+       } else {
+               item = string_list_append(value, &extra_hdr);
        }
-       if (!strncasecmp(value, "cc: ", 4)) {
-               ALLOC_GROW(extra_cc, extra_cc_nr + 1, extra_cc_alloc);
-               extra_cc[extra_cc_nr++] = xstrndup(value + 4, len - 4);
-               return;
-       }
-       ALLOC_GROW(extra_hdr, extra_hdr_nr + 1, extra_hdr_alloc);
-       extra_hdr[extra_hdr_nr++] = xstrndup(value, len);
+
+       item->string[len] = '\0';
 }
 
 #define THREAD_SHALLOW 1
@@ -507,15 +500,13 @@ static int git_format_config(const char *var, const char *value, void *cb)
        if (!strcmp(var, "format.to")) {
                if (!value)
                        return config_error_nonbool(var);
-               ALLOC_GROW(extra_to, extra_to_nr + 1, extra_to_alloc);
-               extra_to[extra_to_nr++] = xstrdup(value);
+               string_list_append(value, &extra_to);
                return 0;
        }
        if (!strcmp(var, "format.cc")) {
                if (!value)
                        return config_error_nonbool(var);
-               ALLOC_GROW(extra_cc, extra_cc_nr + 1, extra_cc_alloc);
-               extra_cc[extra_cc_nr++] = xstrdup(value);
+               string_list_append(value, &extra_cc);
                return 0;
        }
        if (!strcmp(var, "diff.color") || !strcmp(var, "color.diff")) {
@@ -884,15 +875,13 @@ static int header_callback(const struct option *opt, const char *arg, int unset)
 
 static int to_callback(const struct option *opt, const char *arg, int unset)
 {
-       ALLOC_GROW(extra_to, extra_to_nr + 1, extra_to_alloc);
-       extra_to[extra_to_nr++] = xstrdup(arg);
+       string_list_append(arg, &extra_to);
        return 0;
 }
 
 static int cc_callback(const struct option *opt, const char *arg, int unset)
 {
-       ALLOC_GROW(extra_cc, extra_cc_nr + 1, extra_cc_alloc);
-       extra_cc[extra_cc_nr++] = xstrdup(arg);
+       string_list_append(arg, &extra_cc);
        return 0;
 }
 
@@ -972,6 +961,9 @@ int cmd_format_patch(int argc, const char **argv, const char *prefix)
                OPT_END()
        };
 
+       extra_hdr.strdup_strings = 1;
+       extra_to.strdup_strings = 1;
+       extra_cc.strdup_strings = 1;
        git_config(git_format_config, NULL);
        init_revisions(&rev, prefix);
        rev.commit_format = CMIT_FMT_EMAIL;
@@ -1008,29 +1000,29 @@ int cmd_format_patch(int argc, const char **argv, const char *prefix)
                add_signoff = xmemdupz(committer, endpos - committer + 1);
        }
 
-       for (i = 0; i < extra_hdr_nr; i++) {
-               strbuf_addstr(&buf, extra_hdr[i]);
+       for (i = 0; i < extra_hdr.nr; i++) {
+               strbuf_addstr(&buf, extra_hdr.items[i].string);
                strbuf_addch(&buf, '\n');
        }
 
-       if (extra_to_nr)
+       if (extra_to.nr)
                strbuf_addstr(&buf, "To: ");
-       for (i = 0; i < extra_to_nr; i++) {
+       for (i = 0; i < extra_to.nr; i++) {
                if (i)
                        strbuf_addstr(&buf, "    ");
-               strbuf_addstr(&buf, extra_to[i]);
-               if (i + 1 < extra_to_nr)
+               strbuf_addstr(&buf, extra_to.items[i].string);
+               if (i + 1 < extra_to.nr)
                        strbuf_addch(&buf, ',');
                strbuf_addch(&buf, '\n');
        }
 
-       if (extra_cc_nr)
+       if (extra_cc.nr)
                strbuf_addstr(&buf, "Cc: ");
-       for (i = 0; i < extra_cc_nr; i++) {
+       for (i = 0; i < extra_cc.nr; i++) {
                if (i)
                        strbuf_addstr(&buf, "    ");
-               strbuf_addstr(&buf, extra_cc[i]);
-               if (i + 1 < extra_cc_nr)
+               strbuf_addstr(&buf, extra_cc.items[i].string);
+               if (i + 1 < extra_cc.nr)
                        strbuf_addch(&buf, ',');
                strbuf_addch(&buf, '\n');
        }
@@ -1239,6 +1231,9 @@ int cmd_format_patch(int argc, const char **argv, const char *prefix)
                        fclose(stdout);
        }
        free(list);
+       string_list_clear(&extra_to, 0);
+       string_list_clear(&extra_cc, 0);
+       string_list_clear(&extra_hdr, 0);
        if (ignore_if_in_upstream)
                free_patch_ids(&ids);
        return 0;