ui-log.c: improve handling of range-search argument

Signed-off-by: Lars Hjemli <hjemli@gmail.com>

1 files changed, 60 insertions, 11 deletions

diff --git a/ui-log.c b/ui-log.c
index b9771fa..27f5a1a 100644
--- a/ui-log.c
+++ b/ui-log.c
@@ -1,23 +1,24 @@
 /* ui-log.c: functions for log output
  *
  * Copyright (C) 2006 Lars Hjemli
  *
  * Licensed under GNU General Public License v2
  *   (see COPYING for full license text)
  */
 
 #include "cgit.h"
 #include "html.h"
 #include "ui-shared.h"
+#include "vector.h"
 
 int files, add_lines, rem_lines;
 
 void count_lines(char *line, int size)
 {
         if (size <= 0)
                 return;
 
         if (line[0] == '+')
                 add_lines++;
 
         else if (line[0] == '-')
@@ -139,56 +140,104 @@ void print_commit(struct commit *commit)
 static const char *disambiguate_ref(const char *ref)
 {
         unsigned char sha1[20];
         const char *longref;
 
         longref = fmt("refs/heads/%s", ref);
         if (get_sha1(longref, sha1) == 0)
                 return longref;
 
         return ref;
 }
 
+static char *next_token(char **src)
+{
+        char *result;
+
+        if (!src || !*src)
+                return NULL;
+        while (isspace(**src))
+                (*src)++;
+        if (!**src)
+                return NULL;
+        result = *src;
+        while (**src) {
+                if (isspace(**src)) {
+                        **src = '\0';
+                        (*src)++;
+                        break;
+                }
+                (*src)++;
+        }
+        return result;
+}
+
 void cgit_print_log(const char *tip, int ofs, int cnt, char *grep, char *pattern,
                     char *path, int pager)
 {
         struct rev_info rev;
         struct commit *commit;
-        const char *argv[] = {NULL, NULL, NULL, NULL, NULL};
-        int argc = 2;
+        struct vector vec = VECTOR_INIT(char *);
         int i, columns = 3;
+        char *arg;
+
+        /* First argv is NULL */
+        vector_push(&vec, NULL, 0);
 
         if (!tip)
                 tip = ctx.qry.head;
-
-        argv[1] = disambiguate_ref(tip);
+        tip = disambiguate_ref(tip);
+        vector_push(&vec, &tip, 0);
 
         if (grep && pattern && *pattern) {
+                pattern = xstrdup(pattern);
                 if (!strcmp(grep, "grep") || !strcmp(grep, "author") ||
-                    !strcmp(grep, "committer"))
-                        argv[argc++] = fmt("--%s=%s", grep, pattern);
-                if (!strcmp(grep, "range"))
-                        argv[1] = pattern;
+                    !strcmp(grep, "committer")) {
+                        arg = fmt("--%s=%s", grep, pattern);
+                        vector_push(&vec, &arg, 0);
+                }
+                if (!strcmp(grep, "range")) {
+                        /* Split the pattern at whitespace and add each token
+                         * as a revision expression. Do not accept other
+                         * rev-list options. Also, replace the previously
+                         * pushed tip (it's no longer relevant).
+                         */
+                        vec.count--;
+                        while ((arg = next_token(&pattern))) {
+                                if (*arg == '-') {
+                                        fprintf(stderr, "Bad range expr: %s\n",
+                                                arg);
+                                        break;
+                                }
+                                vector_push(&vec, &arg, 0);
+                        }
+                }
         }
 
         if (path) {
-                argv[argc++] = "--";
-                argv[argc++] = path;
+                arg = "--";
+                vector_push(&vec, &arg, 0);
+                vector_push(&vec, &path, 0);
         }
+
+        /* Make sure the vector is NULL-terminated */
+        vector_push(&vec, NULL, 0);
+        vec.count--;
+
         init_revisions(&rev, NULL);
         rev.abbrev = DEFAULT_ABBREV;
         rev.commit_format = CMIT_FMT_DEFAULT;
         rev.verbose_header = 1;
         rev.show_root_diff = 0;
-        setup_revisions(argc, argv, &rev, NULL);
+        setup_revisions(vec.count, vec.data, &rev, NULL);
         load_ref_decorations(DECORATE_FULL_REFS);
         rev.show_decorations = 1;
         rev.grep_filter.regflags |= REG_ICASE;
         compile_grep_patterns(&rev.grep_filter);
         prepare_revision_walk(&rev);
 
         if (pager)
                 html("<table class='list nowrap'>");
 
         html("<tr class='nohover'><th class='left'>Age</th>"
               "<th class='left'>Commit message");
         if (pager) {