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-rw-r--r--ui-snapshot.c100
1 files changed, 53 insertions, 47 deletions
diff --git a/ui-snapshot.c b/ui-snapshot.c
index 9c4d086..f25613e 100644
--- a/ui-snapshot.c
+++ b/ui-snapshot.c
@@ -58,8 +58,8 @@ static int write_tar_bzip2_archive(struct archiver_args *args)
58 58
59const struct cgit_snapshot_format cgit_snapshot_formats[] = { 59const struct cgit_snapshot_format cgit_snapshot_formats[] = {
60 { ".zip", "application/x-zip", write_zip_archive, 0x1 }, 60 { ".zip", "application/x-zip", write_zip_archive, 0x1 },
61 { ".tar.gz", "application/x-tar", write_tar_gzip_archive, 0x2 }, 61 { ".tar.gz", "application/x-gzip", write_tar_gzip_archive, 0x2 },
62 { ".tar.bz2", "application/x-tar", write_tar_bzip2_archive, 0x4 }, 62 { ".tar.bz2", "application/x-bzip2", write_tar_bzip2_archive, 0x4 },
63 { ".tar", "application/x-tar", write_tar_archive, 0x8 }, 63 { ".tar", "application/x-tar", write_tar_archive, 0x8 },
64 {} 64 {}
65}; 65};
@@ -114,58 +114,53 @@ static int make_snapshot(const struct cgit_snapshot_format *format,
114 return 0; 114 return 0;
115} 115}
116 116
117char *dwim_filename = NULL; 117/* Try to guess the requested revision from the requested snapshot name.
118const char *dwim_refname = NULL; 118 * First the format extension is stripped, e.g. "cgit-0.7.2.tar.gz" become
119 119 * "cgit-0.7.2". If this is a valid commit object name we've got a winner.
120static int ref_cb(const char *refname, const unsigned char *sha1, int flags, 120 * Otherwise, if the snapshot name has a prefix matching the result from
121 void *cb_data) 121 * repo_basename(), we strip the basename and any following '-' and '_'
122{ 122 * characters ("cgit-0.7.2" -> "0.7.2") and check the resulting name once
123 const char *r = refname; 123 * more. If this still isn't a valid commit object name, we check if pre-
124 while (r && *r) { 124 * pending a 'v' to the remaining snapshot name ("0.7.2" -> "v0.7.2") gives
125 fprintf(stderr, " cmp %s with %s:", dwim_filename, r); 125 * us something valid.
126 if (!strcmp(dwim_filename, r)) {
127 fprintf(stderr, "MATCH!\n");
128 dwim_refname = refname;
129 return 1;
130 }
131 fprintf(stderr, "no match\n");
132 if (isdigit(*r))
133 break;
134 r++;
135 }
136 return 0;
137}
138
139/* Try to guess the requested revision by combining repo name and tag name
140 * and comparing this to the requested snapshot name. E.g. the requested
141 * snapshot is "cgit-0.7.2.tar.gz" while repo name is "cgit" and tag name
142 * is "v0.7.2". First, the reponame is stripped off, leaving "-0.7.2.tar.gz".
143 * Next, any '-' and '_' characters are stripped, leaving "0.7.2.tar.gz".
144 * Finally, the requested format suffix is removed and we end up with "0.7.2".
145 * Then we test each tag against this dwimmed filename, and for each tag
146 * we even try to remove any leading characters which are non-digits. I.e.
147 * we first compare with "v0.7.2", then with "0.7.2" and we've got a match.
148 */ 126 */
149static const char *get_ref_from_filename(const char *url, const char *filename, 127static const char *get_ref_from_filename(const char *url, const char *filename,
150 const struct cgit_snapshot_format *fmt) 128 const struct cgit_snapshot_format *format)
151{ 129{
152 const char *reponame = cgit_repobasename(url); 130 const char *reponame;
153 fprintf(stderr, "reponame=%s, filename=%s\n", reponame, filename); 131 unsigned char sha1[20];
154 if (prefixcmp(filename, reponame)) 132 char *snapshot;
155 return NULL; 133
156 filename += strlen(reponame); 134 snapshot = xstrdup(filename);
157 while (filename && (*filename == '-' || *filename == '_')) 135 snapshot[strlen(snapshot) - strlen(format->suffix)] = '\0';
158 filename++; 136 fprintf(stderr, "snapshot=%s\n", snapshot);
159 dwim_filename = xstrdup(filename); 137
160 dwim_filename[strlen(filename) - strlen(fmt->suffix)] = '\0'; 138 if (get_sha1(snapshot, sha1) == 0)
161 for_each_tag_ref(ref_cb, NULL); 139 return snapshot;
162 return dwim_refname; 140
141 reponame = cgit_repobasename(url);
142 fprintf(stderr, "reponame=%s\n", reponame);
143 if (prefixcmp(snapshot, reponame) == 0) {
144 snapshot += strlen(reponame);
145 while (snapshot && (*snapshot == '-' || *snapshot == '_'))
146 snapshot++;
147 }
148
149 if (get_sha1(snapshot, sha1) == 0)
150 return snapshot;
151
152 snapshot = fmt("v%s", snapshot);
153 if (get_sha1(snapshot, sha1) == 0)
154 return snapshot;
155
156 return NULL;
163} 157}
164 158
165void cgit_print_snapshot(const char *head, const char *hex, const char *prefix, 159void cgit_print_snapshot(const char *head, const char *hex,
166 const char *filename, int snapshots, int dwim) 160 const char *filename, int snapshots, int dwim)
167{ 161{
168 const struct cgit_snapshot_format* f; 162 const struct cgit_snapshot_format* f;
163 char *prefix = NULL;
169 164
170 f = get_format(filename); 165 f = get_format(filename);
171 if (!f) { 166 if (!f) {
@@ -178,11 +173,22 @@ void cgit_print_snapshot(const char *head, const char *hex, const char *prefix,
178 return; 173 return;
179 } 174 }
180 175
181 if (!hex && dwim) 176 if (!hex && dwim) {
182 hex = get_ref_from_filename(ctx.repo->url, filename, f); 177 hex = get_ref_from_filename(ctx.repo->url, filename, f);
178 if (hex == NULL) {
179 html_status(404, "Not found", 0);
180 return;
181 }
182 prefix = xstrdup(filename);
183 prefix[strlen(filename) - strlen(f->suffix)] = '\0';
184 }
183 185
184 if (!hex) 186 if (!hex)
185 hex = head; 187 hex = head;
186 188
189 if (!prefix)
190 prefix = xstrdup(cgit_repobasename(ctx.repo->url));
191
187 make_snapshot(f, hex, prefix, filename); 192 make_snapshot(f, hex, prefix, filename);
193 free(prefix);
188} 194}