]> git.cameronkatri.com Git - cgit.git/blobdiff - ui-diff.c
ui-diff: Use diff_tree_sha1() for raw diff formatting
[cgit.git] / ui-diff.c
index ac9a3faf6f97f735777ec8ec554a23e4c67ecac9..7395c4573966adc23a8fb16fb97f0cad21b7bdee 100644 (file)
--- a/ui-diff.c
+++ b/ui-diff.c
  */
 
 #include "cgit.h"
-
+#include "ui-diff.h"
+#include "html.h"
+#include "ui-shared.h"
+#include "ui-ssdiff.h"
 
 unsigned char old_rev_sha1[20];
 unsigned char new_rev_sha1[20];
 
+static int files, slots;
+static int total_adds, total_rems, max_changes;
+static int lines_added, lines_removed;
+
+static struct fileinfo {
+       char status;
+       unsigned char old_sha1[20];
+       unsigned char new_sha1[20];
+       unsigned short old_mode;
+       unsigned short new_mode;
+       char *old_path;
+       char *new_path;
+       unsigned int added;
+       unsigned int removed;
+       unsigned long old_size;
+       unsigned long new_size;
+       int binary:1;
+} *items;
+
+static int use_ssdiff = 0;
+static struct diff_filepair *current_filepair;
+
+struct diff_filespec *cgit_get_current_old_file(void)
+{
+       return current_filepair->one;
+}
+
+struct diff_filespec *cgit_get_current_new_file(void)
+{
+       return current_filepair->two;
+}
+
+static void print_fileinfo(struct fileinfo *info)
+{
+       char *class;
+
+       switch (info->status) {
+       case DIFF_STATUS_ADDED:
+               class = "add";
+               break;
+       case DIFF_STATUS_COPIED:
+               class = "cpy";
+               break;
+       case DIFF_STATUS_DELETED:
+               class = "del";
+               break;
+       case DIFF_STATUS_MODIFIED:
+               class = "upd";
+               break;
+       case DIFF_STATUS_RENAMED:
+               class = "mov";
+               break;
+       case DIFF_STATUS_TYPE_CHANGED:
+               class = "typ";
+               break;
+       case DIFF_STATUS_UNKNOWN:
+               class = "unk";
+               break;
+       case DIFF_STATUS_UNMERGED:
+               class = "stg";
+               break;
+       default:
+               die("bug: unhandled diff status %c", info->status);
+       }
+
+       html("<tr>");
+       htmlf("<td class='mode'>");
+       if (is_null_sha1(info->new_sha1)) {
+               cgit_print_filemode(info->old_mode);
+       } else {
+               cgit_print_filemode(info->new_mode);
+       }
+
+       if (info->old_mode != info->new_mode &&
+           !is_null_sha1(info->old_sha1) &&
+           !is_null_sha1(info->new_sha1)) {
+               html("<span class='modechange'>[");
+               cgit_print_filemode(info->old_mode);
+               html("]</span>");
+       }
+       htmlf("</td><td class='%s'>", class);
+       cgit_diff_link(info->new_path, NULL, NULL, ctx.qry.head, ctx.qry.sha1,
+                      ctx.qry.sha2, info->new_path, 0);
+       if (info->status == DIFF_STATUS_COPIED || info->status == DIFF_STATUS_RENAMED) {
+               htmlf(" (%s from ",
+                     info->status == DIFF_STATUS_COPIED ? "copied" : "renamed");
+               html_txt(info->old_path);
+               html(")");
+       }
+       html("</td><td class='right'>");
+       if (info->binary) {
+               htmlf("bin</td><td class='graph'>%ld -> %ld bytes",
+                     info->old_size, info->new_size);
+               return;
+       }
+       htmlf("%d", info->added + info->removed);
+       html("</td><td class='graph'>");
+       htmlf("<table summary='file diffstat' width='%d%%'><tr>", (max_changes > 100 ? 100 : max_changes));
+       htmlf("<td class='add' style='width: %.1f%%;'/>",
+             info->added * 100.0 / max_changes);
+       htmlf("<td class='rem' style='width: %.1f%%;'/>",
+             info->removed * 100.0 / max_changes);
+       htmlf("<td class='none' style='width: %.1f%%;'/>",
+             (max_changes - info->removed - info->added) * 100.0 / max_changes);
+       html("</tr></table></td></tr>\n");
+}
+
+static void count_diff_lines(char *line, int len)
+{
+       if (line && (len > 0)) {
+               if (line[0] == '+')
+                       lines_added++;
+               else if (line[0] == '-')
+                       lines_removed++;
+       }
+}
+
+static void inspect_filepair(struct diff_filepair *pair)
+{
+       int binary = 0;
+       unsigned long old_size = 0;
+       unsigned long new_size = 0;
+       files++;
+       lines_added = 0;
+       lines_removed = 0;
+       cgit_diff_files(pair->one->sha1, pair->two->sha1, &old_size, &new_size,
+                       &binary, 0, ctx.qry.ignorews, count_diff_lines);
+       if (files >= slots) {
+               if (slots == 0)
+                       slots = 4;
+               else
+                       slots = slots * 2;
+               items = xrealloc(items, slots * sizeof(struct fileinfo));
+       }
+       items[files-1].status = pair->status;
+       hashcpy(items[files-1].old_sha1, pair->one->sha1);
+       hashcpy(items[files-1].new_sha1, pair->two->sha1);
+       items[files-1].old_mode = pair->one->mode;
+       items[files-1].new_mode = pair->two->mode;
+       items[files-1].old_path = xstrdup(pair->one->path);
+       items[files-1].new_path = xstrdup(pair->two->path);
+       items[files-1].added = lines_added;
+       items[files-1].removed = lines_removed;
+       items[files-1].old_size = old_size;
+       items[files-1].new_size = new_size;
+       items[files-1].binary = binary;
+       if (lines_added + lines_removed > max_changes)
+               max_changes = lines_added + lines_removed;
+       total_adds += lines_added;
+       total_rems += lines_removed;
+}
+
+static void cgit_print_diffstat(const unsigned char *old_sha1,
+                               const unsigned char *new_sha1,
+                               const char *prefix)
+{
+       int i;
+
+       html("<div class='diffstat-header'>");
+       cgit_diff_link("Diffstat", NULL, NULL, ctx.qry.head, ctx.qry.sha1,
+                      ctx.qry.sha2, NULL, 0);
+       if (prefix) {
+               html(" (limited to '");
+               html_txt(prefix);
+               html("')");
+       }
+       html("</div>");
+       html("<table summary='diffstat' class='diffstat'>");
+       max_changes = 0;
+       cgit_diff_tree(old_sha1, new_sha1, inspect_filepair, prefix,
+                      ctx.qry.ignorews);
+       for (i = 0; i<files; i++)
+               print_fileinfo(&items[i]);
+       html("</table>");
+       html("<div class='diffstat-summary'>");
+       htmlf("%d files changed, %d insertions, %d deletions",
+             files, total_adds, total_rems);
+       html("</div>");
+}
+
+
 /*
  * print a single line returned from xdiff
  */
@@ -47,11 +231,6 @@ static void header(unsigned char *sha1, char *path1, int mode1,
        html(" b/");
        html_txt(path2);
 
-       if (is_null_sha1(sha1))
-               path1 = "dev/null";
-       if (is_null_sha1(sha2))
-               path2 = "dev/null";
-
        if (mode1 == 0)
                htmlf("<br/>new file mode %.6o", mode2);
 
@@ -69,15 +248,23 @@ static void header(unsigned char *sha1, char *path1, int mode1,
                        if (mode2 != mode1)
                                htmlf("..%.6o", mode2);
                }
-               html("<br/>--- a/");
+               if (is_null_sha1(sha1)) {
+                       path1 = "dev/null";
+                       html("<br/>--- /");
+               } else
+                       html("<br/>--- a/");
                if (mode1 != 0)
-                       cgit_tree_link(path1, NULL, NULL, cgit_query_head,
+                       cgit_tree_link(path1, NULL, NULL, ctx.qry.head,
                                       sha1_to_hex(old_rev_sha1), path1);
                else
                        html_txt(path1);
-               html("<br/>+++ b/");
+               if (is_null_sha1(sha2)) {
+                       path2 = "dev/null";
+                       html("<br/>+++ /");
+               } else
+                       html("<br/>+++ b/");
                if (mode2 != 0)
-                       cgit_tree_link(path2, NULL, NULL, cgit_query_head,
+                       cgit_tree_link(path2, NULL, NULL, ctx.qry.head,
                                       sha1_to_hex(new_rev_sha1), path2);
                else
                        html_txt(path2);
@@ -87,63 +274,168 @@ static void header(unsigned char *sha1, char *path1, int mode1,
 
 static void filepair_cb(struct diff_filepair *pair)
 {
+       unsigned long old_size = 0;
+       unsigned long new_size = 0;
+       int binary = 0;
+       linediff_fn print_line_fn = print_line;
+
+       current_filepair = pair;
+       if (use_ssdiff) {
+               cgit_ssdiff_header_begin();
+               print_line_fn = cgit_ssdiff_line_cb;
+       }
        header(pair->one->sha1, pair->one->path, pair->one->mode,
               pair->two->sha1, pair->two->path, pair->two->mode);
+       if (use_ssdiff)
+               cgit_ssdiff_header_end();
        if (S_ISGITLINK(pair->one->mode) || S_ISGITLINK(pair->two->mode)) {
                if (S_ISGITLINK(pair->one->mode))
-                       print_line(fmt("-Subproject %s", sha1_to_hex(pair->one->sha1)), 52);
+                       print_line_fn(fmt("-Subproject %s", sha1_to_hex(pair->one->sha1)), 52);
                if (S_ISGITLINK(pair->two->mode))
-                       print_line(fmt("+Subproject %s", sha1_to_hex(pair->two->sha1)), 52);
+                       print_line_fn(fmt("+Subproject %s", sha1_to_hex(pair->two->sha1)), 52);
+               if (use_ssdiff)
+                       cgit_ssdiff_footer();
                return;
        }
-       if (cgit_diff_files(pair->one->sha1, pair->two->sha1, print_line))
+       if (cgit_diff_files(pair->one->sha1, pair->two->sha1, &old_size,
+                           &new_size, &binary, ctx.qry.context,
+                           ctx.qry.ignorews, print_line_fn))
                cgit_print_error("Error running diff");
+       if (binary) {
+               if (use_ssdiff)
+                       html("<tr><td colspan='4'>Binary files differ</td></tr>");
+               else
+                       html("Binary files differ");
+       }
+       if (use_ssdiff)
+               cgit_ssdiff_footer();
 }
 
-void cgit_print_diff(const char *new_rev, const char *old_rev, const char *prefix)
+void cgit_print_diff_ctrls()
+{
+       int i, curr;
+
+       html("<div class='cgit-panel'>");
+       html("<b>diff options</b>");
+       html("<form method='get' action='.'>");
+       cgit_add_hidden_formfields(1, 0, ctx.qry.page);
+       html("<table>");
+       html("<tr><td colspan='2'/></tr>");
+       html("<tr>");
+       html("<td class='label'>context:</td>");
+       html("<td class='ctrl'>");
+       html("<select name='context' onchange='this.form.submit();'>");
+       curr = ctx.qry.context;
+       if (!curr)
+               curr = 3;
+       for (i = 1; i <= 10; i++)
+               html_intoption(i, fmt("%d", i), curr);
+       for (i = 15; i <= 40; i += 5)
+               html_intoption(i, fmt("%d", i), curr);
+       html("</select>");
+       html("</td>");
+       html("</tr><tr>");
+       html("<td class='label'>space:</td>");
+       html("<td class='ctrl'>");
+       html("<select name='ignorews' onchange='this.form.submit();'>");
+       html_intoption(0, "include", ctx.qry.ignorews);
+       html_intoption(1, "ignore", ctx.qry.ignorews);
+       html("</select>");
+       html("</td>");
+       html("</tr><tr>");
+       html("<td class='label'>mode:</td>");
+       html("<td class='ctrl'>");
+       html("<select name='ss' onchange='this.form.submit();'>");
+       curr = ctx.qry.has_ssdiff ? ctx.qry.ssdiff : ctx.cfg.ssdiff;
+       html_intoption(0, "unified", curr);
+       html_intoption(1, "ssdiff", curr);
+       html("</select></td></tr>");
+       html("<tr><td/><td class='ctrl'>");
+       html("<noscript><input type='submit' value='reload'/></noscript>");
+       html("</td></tr></table>");
+       html("</form>");
+       html("</div>");
+}
+
+void cgit_print_diff(const char *new_rev, const char *old_rev,
+                    const char *prefix, int show_ctrls, int raw)
 {
-       enum object_type type;
-       unsigned long size;
        struct commit *commit, *commit2;
+       const unsigned char *old_tree_sha1, *new_tree_sha1;
 
        if (!new_rev)
-               new_rev = cgit_query_head;
-       get_sha1(new_rev, new_rev_sha1);
-       type = sha1_object_info(new_rev_sha1, &size);
-       if (type == OBJ_BAD) {
-               cgit_print_error(fmt("Bad object name: %s", new_rev));
+               new_rev = ctx.qry.head;
+       if (get_sha1(new_rev, new_rev_sha1)) {
+               cgit_print_error("Bad object name: %s", new_rev);
                return;
        }
-       if (type != OBJ_COMMIT) {
-               cgit_print_error(fmt("Unhandled object type: %s",
-                                    typename(type)));
+       commit = lookup_commit_reference(new_rev_sha1);
+       if (!commit || parse_commit(commit)) {
+               cgit_print_error("Bad commit: %s", sha1_to_hex(new_rev_sha1));
                return;
        }
+       new_tree_sha1 = commit->tree->object.sha1;
 
-       commit = lookup_commit_reference(new_rev_sha1);
-       if (!commit || parse_commit(commit))
-               cgit_print_error(fmt("Bad commit: %s", sha1_to_hex(new_rev_sha1)));
-
-       if (old_rev)
-               get_sha1(old_rev, old_rev_sha1);
-       else if (commit->parents && commit->parents->item)
+       if (old_rev) {
+               if (get_sha1(old_rev, old_rev_sha1)) {
+                       cgit_print_error("Bad object name: %s", old_rev);
+                       return;
+               }
+       } else if (commit->parents && commit->parents->item) {
                hashcpy(old_rev_sha1, commit->parents->item->object.sha1);
-       else
+       } else {
                hashclr(old_rev_sha1);
+       }
 
        if (!is_null_sha1(old_rev_sha1)) {
-               type = sha1_object_info(old_rev_sha1, &size);
-               if (type == OBJ_BAD) {
-                       cgit_print_error(fmt("Bad object name: %s", sha1_to_hex(old_rev_sha1)));
+               commit2 = lookup_commit_reference(old_rev_sha1);
+               if (!commit2 || parse_commit(commit2)) {
+                       cgit_print_error("Bad commit: %s", sha1_to_hex(old_rev_sha1));
                        return;
                }
-               commit2 = lookup_commit_reference(old_rev_sha1);
-               if (!commit2 || parse_commit(commit2))
-                       cgit_print_error(fmt("Bad commit: %s", sha1_to_hex(old_rev_sha1)));
+               old_tree_sha1 = commit2->tree->object.sha1;
+       } else {
+               old_tree_sha1 = NULL;
+       }
+
+       if (raw) {
+               struct diff_options diffopt;
+
+               diff_setup(&diffopt);
+               diffopt.output_format = DIFF_FORMAT_PATCH;
+               DIFF_OPT_SET(&diffopt, RECURSIVE);
+               diff_setup_done(&diffopt);
+
+               ctx.page.mimetype = "text/plain";
+               cgit_print_http_headers(&ctx);
+               if (old_tree_sha1) {
+                       diff_tree_sha1(old_tree_sha1, new_tree_sha1, "",
+                                      &diffopt);
+               } else {
+                       diff_root_tree_sha1(new_tree_sha1, "", &diffopt);
+               }
+               diffcore_std(&diffopt);
+               diff_flush(&diffopt);
+
+               return;
+       }
+
+       use_ssdiff = ctx.qry.has_ssdiff ? ctx.qry.ssdiff : ctx.cfg.ssdiff;
+
+       if (show_ctrls)
+               cgit_print_diff_ctrls();
+
+       cgit_print_diffstat(old_rev_sha1, new_rev_sha1, prefix);
+
+       if (use_ssdiff) {
+               html("<table summary='ssdiff' class='ssdiff'>");
+       } else {
+               html("<table summary='diff' class='diff'>");
+               html("<tr><td>");
        }
-       html("<table class='diff'>");
-       html("<tr><td>");
-       cgit_diff_tree(old_rev_sha1, new_rev_sha1, filepair_cb, prefix);
-       html("</td></tr>");
+       cgit_diff_tree(old_rev_sha1, new_rev_sha1, filepair_cb, prefix,
+                      ctx.qry.ignorews);
+       if (!use_ssdiff)
+               html("</td></tr>");
        html("</table>");
 }