stagit/urmoms.c

650 lines
16 KiB
C
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#include <sys/stat.h>
#include <err.h>
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#include <inttypes.h>
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#include <libgen.h>
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#include <limits.h>
#include <stdio.h>
#include <stdlib.h>
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#include <string.h>
#include <unistd.h>
#include "git2.h"
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static git_repository *repo;
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static const char *relpath = "";
static const char *repodir;
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static char name[255];
static char description[255];
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static int hasreadme, haslicense;
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int
writeheader(FILE *fp)
{
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fputs("<!DOCTYPE HTML>"
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"<html dir=\"ltr\" lang=\"en\">\n<head>\n"
"<meta http-equiv=\"Content-Type\" content=\"text/html; charset=UTF-8\" />\n"
"<meta http-equiv=\"Content-Language\" content=\"en\" />\n", fp);
fprintf(fp, "<title>%s%s%s</title>\n", name, description[0] ? " - " : "", description);
fprintf(fp, "<link rel=\"icon\" type=\"image/png\" href=\"%sfavicon.png\" />\n", relpath);
fprintf(fp, "<link rel=\"alternate\" type=\"application/atom+xml\" title=\"%s Atom Feed\" href=\"%satom.xml\" />\n",
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name, relpath);
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fprintf(fp, "<link rel=\"stylesheet\" type=\"text/css\" href=\"%sstyle.css\" />\n", relpath);
fputs("</head>\n<body>\n<center>\n", fp);
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fprintf(fp, "<h1><img src=\"%slogo.png\" alt=\"\" width=\"32\" height=\"32\" /> %s <span class=\"desc\">%s</span></h1>\n",
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relpath, name, description);
fprintf(fp, "<a href=\"%slog.html\">Log</a> | ", relpath);
fprintf(fp, "<a href=\"%sfiles.html\">Files</a>", relpath);
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if (hasreadme)
fprintf(fp, " | <a href=\"%sreadme.html\">README</a>", relpath);
if (haslicense)
fprintf(fp, " | <a href=\"%slicense.html\">LICENSE</a>", relpath);
fputs("\n</center>\n<hr/>\n<pre>", fp);
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return 0;
}
int
writefooter(FILE *fp)
{
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return !fputs("</pre>\n</body>\n</html>", fp);
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}
FILE *
efopen(const char *name, const char *flags)
{
FILE *fp;
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if (!(fp = fopen(name, flags)))
err(1, "fopen");
return fp;
}
/* Escape characters below as HTML 2.0 / XML 1.0. */
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void
xmlencode(FILE *fp, const char *s, size_t len)
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{
size_t i;
for (i = 0; *s && i < len; s++, i++) {
switch(*s) {
case '<': fputs("&lt;", fp); break;
case '>': fputs("&gt;", fp); break;
case '\'': fputs("&apos;", fp); break;
case '&': fputs("&amp;", fp); break;
case '"': fputs("&quot;", fp); break;
default: fputc(*s, fp);
}
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}
}
/* Some implementations of basename(3) return a pointer to a static
* internal buffer (OpenBSD). Others modify the contents of `path` (POSIX).
* This is a wrapper function that is compatible with both versions.
* The program will error out if basename(3) failed, this can only happen
* with the OpenBSD version. */
char *
xbasename(const char *path)
{
char *p, *b;
if (!(p = strdup(path)))
err(1, "strdup");
if (!(b = basename(p)))
err(1, "basename");
if (!(b = strdup(b)))
err(1, "strdup");
free(p);
return b;
}
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void
printtimez(FILE *fp, const git_time *intime)
{
struct tm *intm;
time_t t;
int offset, hours, minutes;
char sign, out[32];
offset = intime->offset;
if (offset < 0) {
sign = '-';
offset = -offset;
} else {
sign = '+';
}
hours = offset / 60;
minutes = offset % 60;
t = (time_t) intime->time + (intime->offset * 60);
intm = gmtime(&t);
strftime(out, sizeof(out), "%Y-%m-%dT%H:%M:%SZ", intm);
fputs(out, fp);
}
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void
printtime(FILE *fp, const git_time *intime)
{
struct tm *intm;
time_t t;
int offset, hours, minutes;
char sign, out[32];
offset = intime->offset;
if (offset < 0) {
sign = '-';
offset = -offset;
} else {
sign = '+';
}
hours = offset / 60;
minutes = offset % 60;
t = (time_t) intime->time + (intime->offset * 60);
intm = gmtime(&t);
strftime(out, sizeof(out), "%a %b %e %T %Y", intm);
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fprintf(fp, "%s %c%02d%02d", out, sign, hours, minutes);
}
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void
printcommit(FILE *fp, git_commit *commit)
{
const git_signature *sig;
char buf[GIT_OID_HEXSZ + 1];
int i, count;
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const char *msg;
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/* TODO: show tag when commit has it */
git_oid_tostr(buf, sizeof(buf), git_commit_id(commit));
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fprintf(fp, "<b>commit</b> <a href=\"%scommit/%s.html\">%s</a>\n",
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relpath, buf, buf);
if (git_oid_tostr(buf, sizeof(buf), git_commit_parent_id(commit, 0)) && buf[0])
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fprintf(fp, "<b>parent</b> <a href=\"%scommit/%s.html\">%s</a>\n",
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relpath, buf, buf);
if ((count = (int)git_commit_parentcount(commit)) > 1) {
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fprintf(fp, "<b>Merge:</b>");
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for (i = 0; i < count; i++) {
git_oid_tostr(buf, 8, git_commit_parent_id(commit, i));
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fprintf(fp, " <a href=\"%scommit/%s.html\">%s</a>",
relpath, buf, buf);
}
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fputc('\n', fp);
}
if ((sig = git_commit_author(commit)) != NULL) {
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fprintf(fp, "<b>Author:</b> ");
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xmlencode(fp, sig->name, strlen(sig->name));
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fprintf(fp, " &lt;<a href=\"mailto:");
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xmlencode(fp, sig->email, strlen(sig->email));
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fputs("\">", fp);
xmlencode(fp, sig->email, strlen(sig->email));
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fputs("</a>&gt;\n<b>Date:</b> ", fp);
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printtime(fp, &sig->when);
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fputc('\n', fp);
}
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fputc('\n', fp);
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if ((msg = git_commit_message(commit)))
xmlencode(fp, msg, strlen(msg));
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fputc('\n', fp);
}
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void
printshowfile(git_commit *commit)
{
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const git_diff_delta *delta = NULL;
const git_diff_hunk *hunk = NULL;
const git_diff_line *line = NULL;
git_commit *parent = NULL;
git_tree *commit_tree = NULL, *parent_tree = NULL;
git_patch *patch = NULL;
git_diff *diff = NULL;
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git_diff_stats *diffstats = NULL;
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git_buf diffstatsbuf;
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FILE *fp;
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size_t i, j, k, ndeltas, nhunks = 0, nhunklines = 0;
char buf[GIT_OID_HEXSZ + 1], path[PATH_MAX];
int error;
git_oid_tostr(buf, sizeof(buf), git_commit_id(commit));
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if (!buf[0])
return;
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snprintf(path, sizeof(path), "commit/%s.html", buf);
/* check if file exists if so skip it */
if (!access(path, F_OK))
return;
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memset(&diffstatsbuf, 0, sizeof(diffstatsbuf));
fp = efopen(path, "w+b");
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writeheader(fp);
printcommit(fp, commit);
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if ((error = git_commit_tree(&commit_tree, commit)))
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goto err;
if (!(error = git_commit_parent(&parent, commit, 0))) {
if ((error = git_commit_tree(&parent_tree, parent)))
goto err; /* TODO: handle error */
} else {
parent = NULL;
parent_tree = NULL;
}
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if ((error = git_diff_tree_to_tree(&diff, repo, parent_tree, commit_tree, NULL)))
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goto err;
/* diff stat */
if (!git_diff_get_stats(&diffstats, diff)) {
if (!git_diff_stats_to_buf(&diffstatsbuf, diffstats,
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GIT_DIFF_STATS_FULL | GIT_DIFF_STATS_SHORT, 80)) {
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fprintf(fp, "<b>Diffstat:</b>\n");
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fputs(diffstatsbuf.ptr, fp);
}
git_diff_stats_free(diffstats);
}
fputs("<hr/>", fp);
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ndeltas = git_diff_num_deltas(diff);
for (i = 0; i < ndeltas; i++) {
if (git_patch_from_diff(&patch, diff, i)) {
git_patch_free(patch);
break; /* TODO: handle error */
}
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delta = git_patch_get_delta(patch);
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fprintf(fp, "<b>diff --git a/<a href=\"%sfile/%s\">%s</a> b/<a href=\"%sfile/%s\">%s</a></b>\n",
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relpath, delta->old_file.path, delta->old_file.path,
relpath, delta->new_file.path, delta->new_file.path);
/* TODO: "new file mode <mode>". */
/* TODO: add indexfrom...indexto + flags */
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#if 0
fputs("<b>--- ", fp);
if (delta->status & GIT_DELTA_ADDED)
fputs("/dev/null", fp);
else
fprintf(fp, "a/<a href=\"%sfile/%s\">%s</a>",
relpath, delta->old_file.path, delta->old_file.path);
fputs("\n+++ ", fp);
if (delta->status & GIT_DELTA_DELETED)
fputs("/dev/null", fp);
else
fprintf(fp, "b/<a href=\"%sfile/%s\">%s</a>",
relpath, delta->new_file.path, delta->new_file.path);
fputs("</b>\n", fp);
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#endif
/* check binary data */
if (delta->flags & GIT_DIFF_FLAG_BINARY) {
fputs("Binary files differ\n", fp);
git_patch_free(patch);
continue;
}
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nhunks = git_patch_num_hunks(patch);
for (j = 0; j < nhunks; j++) {
if (git_patch_get_hunk(&hunk, &nhunklines, patch, j))
break; /* TODO: handle error ? */
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fprintf(fp, "<span class=\"h\">%s</span>\n", hunk->header);
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for (k = 0; ; k++) {
if (git_patch_get_line_in_hunk(&line, patch, j, k))
break;
if (line->old_lineno == -1)
fprintf(fp, "<span class=\"i\"><a href=\"#h%zu-%zu\" id=\"h%zu-%zu\">+",
j, k, j, k);
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else if (line->new_lineno == -1)
fprintf(fp, "<span class=\"d\"><a href=\"#h%zu-%zu\" id=\"h%zu-%zu\">-",
j, k, j, k);
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else
fputc(' ', fp);
xmlencode(fp, line->content, line->content_len);
if (line->old_lineno == -1 || line->new_lineno == -1)
fputs("</a></span>", fp);
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}
}
git_patch_free(patch);
}
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git_diff_free(diff);
writefooter(fp);
fclose(fp);
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return;
err:
git_buf_free(&diffstatsbuf);
fclose(fp);
}
int
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writelog(FILE *fp)
{
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git_revwalk *w = NULL;
git_oid id;
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git_commit *commit = NULL;
const git_signature *author;
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git_diff_stats *stats = NULL;
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git_tree *commit_tree = NULL, *parent_tree = NULL;
git_commit *parent = NULL;
git_diff *diff = NULL;
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size_t nfiles, ndel, nadd;
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const char *summary;
char buf[GIT_OID_HEXSZ + 1];
int error, ret = 0;
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mkdir("commit", 0755);
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git_revwalk_new(&w, repo);
git_revwalk_push_head(w);
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/* TODO: also make "expanded" log ? (with message body) */
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fputs("<table><thead>\n<tr><td>Commit message</td><td>Author</td><td align=\"right\">Age</td>"
"<td align=\"right\">Files</td><td align=\"right\">+</td><td align=\"right\">-</td></tr>\n</thead><tbody>\n", fp);
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while (!git_revwalk_next(&id, w)) {
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relpath = "";
if (git_commit_lookup(&commit, repo, &id)) {
ret = 1;
goto err;
}
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if ((error = git_commit_tree(&commit_tree, commit)))
goto errdiff; /* TODO: handle error */
if (!(error = git_commit_parent(&parent, commit, 0))) {
if ((error = git_commit_tree(&parent_tree, parent)))
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goto errdiff;
} else {
parent = NULL;
parent_tree = NULL;
}
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if ((error = git_diff_tree_to_tree(&diff, repo, parent_tree, commit_tree, NULL)))
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goto errdiff;
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if (git_diff_get_stats(&stats, diff))
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goto errdiff;
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git_oid_tostr(buf, sizeof(buf), git_commit_id(commit));
ndel = git_diff_stats_deletions(stats);
nadd = git_diff_stats_insertions(stats);
nfiles = git_diff_stats_files_changed(stats);
/* TODO: show tag when commit has it */
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/* TODO: collect stats per author and make stats.html page */
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author = git_commit_author(commit);
summary = git_commit_summary(commit);
fputs("<tr><td>", fp);
if (summary) {
fprintf(fp, "<a href=\"%scommit/%s.html\">", relpath, buf);
xmlencode(fp, summary, strlen(summary));
fputs("</a>", fp);
}
fputs("</td><td>", fp);
if (author)
xmlencode(fp, author->name, strlen(author->name));
fputs("</td><td align=\"right\">", fp);
printtime(fp, &author->when);
fputs("</td><td align=\"right\">", fp);
fprintf(fp, "%zu", nfiles);
fputs("</td><td align=\"right\">", fp);
fprintf(fp, "+%zu", nadd);
fputs("</td><td align=\"right\">", fp);
fprintf(fp, "-%zu", ndel);
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fputs("</td></tr>\n", fp);
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relpath = "../";
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printshowfile(commit);
errdiff:
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/* TODO: print error ? */
git_diff_stats_free(stats);
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git_diff_free(diff);
git_commit_free(commit);
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}
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fprintf(fp, "</tbody></table>");
err:
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git_revwalk_free(w);
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relpath = "";
return ret;
}
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void
printcommitatom(FILE *fp, git_commit *commit)
{
const git_signature *sig;
char buf[GIT_OID_HEXSZ + 1];
int i, count;
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const char *msg, *summary;
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fputs("<entry>\n", fp);
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/* TODO: show tag when commit has it */
git_oid_tostr(buf, sizeof(buf), git_commit_id(commit));
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fprintf(fp, "<id>%s</id>\n", buf);
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sig = git_commit_author(commit);
if (sig) {
fputs("<updated>", fp);
printtimez(fp, &sig->when);
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fputs("</updated>\n", fp);
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}
if ((summary = git_commit_summary(commit))) {
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fputs("<title type=\"text\">", fp);
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xmlencode(fp, summary, strlen(summary));
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fputs("</title>\n", fp);
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}
fputs("<content type=\"text\">", fp);
fprintf(fp, "commit %s\n", buf);
if (git_oid_tostr(buf, sizeof(buf), git_commit_parent_id(commit, 0)) && buf[0])
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fprintf(fp, "parent %s\n", buf);
if ((count = (int)git_commit_parentcount(commit)) > 1) {
fprintf(fp, "Merge:");
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for (i = 0; i < count; i++) {
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git_oid_tostr(buf, 8, git_commit_parent_id(commit, i));
fprintf(fp, " %s", buf);
}
fputc('\n', fp);
}
if (sig) {
fprintf(fp, "Author: ");
xmlencode(fp, sig->name, strlen(sig->name));
fprintf(fp, " &lt;");
xmlencode(fp, sig->email, strlen(sig->email));
fprintf(fp, "&gt;\nDate: ");
printtime(fp, &sig->when);
}
fputc('\n', fp);
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if ((msg = git_commit_message(commit)))
xmlencode(fp, msg, strlen(msg));
fputs("\n</content>\n", fp);
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if (sig) {
fputs("<author><name>", fp);
xmlencode(fp, sig->name, strlen(sig->name));
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fputs("</name>\n<email>", fp);
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xmlencode(fp, sig->email, strlen(sig->email));
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fputs("</email>\n</author>\n", fp);
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}
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fputs("</entry>\n", fp);
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}
int
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writeatom(FILE *fp)
{
git_revwalk *w = NULL;
git_oid id;
git_commit *c = NULL;
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size_t i, m = 100; /* max */
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fputs("<?xml version=\"1.0\" encoding=\"UTF-8\"?>\n", fp);
fputs("<feed xmlns=\"http://www.w3.org/2005/Atom\">\n<title>", fp);
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xmlencode(fp, name, strlen(name));
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fputs(", branch master</title>\n<subtitle>", fp);
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xmlencode(fp, description, strlen(description));
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fputs("</subtitle>\n", fp);
git_revwalk_new(&w, repo);
git_revwalk_push_head(w);
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for (i = 0; i < m && !git_revwalk_next(&id, w); i++) {
if (git_commit_lookup(&c, repo, &id))
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return 1; /* TODO: error */
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printcommitatom(fp, c);
git_commit_free(c);
}
git_revwalk_free(w);
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fputs("</feed>", fp);
return 0;
}
int
writefiles(FILE *fp)
{
git_index *index;
const git_index_entry *entry;
size_t count, i;
git_repository_index(&index, repo);
count = git_index_entrycount(index);
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fputs("<table><thead>\n<tr><td>Mode</td><td>Name</td><td align=\"right\">Size</td></tr>\n</thead><tbody>\n", fp);
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for (i = 0; i < count; i++) {
entry = git_index_get_byindex(index, i);
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fputs("<tr><td>", fp);
fprintf(fp, "%u", entry->mode); /* TODO: fancy print, like: "-rw-r--r--" */
fprintf(fp, "</td><td><a href=\"%sfile/", relpath);
xmlencode(fp, entry->path, strlen(entry->path));
fputs("\">", fp);
xmlencode(fp, entry->path, strlen(entry->path));
fputs("</a></td><td align=\"right\">", fp);
fprintf(fp, "%" PRIu64, entry->file_size);
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fputs("</td></tr>\n", fp);
}
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fputs("</tbody></table>", fp);
return 0;
}
void
writeblobhtml(FILE *fp, const git_blob *blob)
{
xmlencode(fp, git_blob_rawcontent(blob), (size_t)git_blob_rawsize(blob));
}
int
main(int argc, char *argv[])
{
git_object *obj = NULL;
const git_error *e = NULL;
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FILE *fp, *fpread;
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char path[PATH_MAX], *p;
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int status;
if (argc != 2) {
fprintf(stderr, "%s <repodir>\n", argv[0]);
return 1;
}
repodir = argv[1];
git_libgit2_init();
if ((status = git_repository_open(&repo, repodir)) < 0) {
e = giterr_last();
fprintf(stderr, "error %d/%d: %s\n", status, e->klass, e->message);
return status;
}
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/* use directory name as name */
p = xbasename(repodir);
snprintf(name, sizeof(name), "%s", p);
free(p);
/* read description or .git/description */
snprintf(path, sizeof(path), "%s%s%s",
repodir, repodir[strlen(repodir)] == '/' ? "" : "/", "description");
if (!(fpread = fopen(path, "r+b"))) {
snprintf(path, sizeof(path), "%s%s%s",
repodir, repodir[strlen(repodir)] == '/' ? "" : "/", ".git/description");
fpread = fopen(path, "r+b");
}
if (fpread) {
if (!fgets(description, sizeof(description), fpread))
description[0] = '\0';
fclose(fpread);
}
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/* check LICENSE */
haslicense = !git_revparse_single(&obj, repo, "HEAD:LICENSE");
/* check README */
hasreadme = !git_revparse_single(&obj, repo, "HEAD:README");
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/* read LICENSE */
if (!git_revparse_single(&obj, repo, "HEAD:LICENSE")) {
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fp = efopen("license.html", "w+b");
writeheader(fp);
writeblobhtml(fp, (git_blob *)obj);
if (ferror(fp))
err(1, "fwrite");
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writefooter(fp);
fclose(fp);
}
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/* read README */
if (!git_revparse_single(&obj, repo, "HEAD:README")) {
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fp = efopen("readme.html", "w+b");
writeheader(fp);
writeblobhtml(fp, (git_blob *)obj);
if (ferror(fp))
err(1, "fwrite");
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writefooter(fp);
fclose(fp);
}
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fp = efopen("log.html", "w+b");
writeheader(fp);
writelog(fp);
writefooter(fp);
fclose(fp);
fp = efopen("files.html", "w+b");
writeheader(fp);
writefiles(fp);
writefooter(fp);
fclose(fp);
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/* Atom feed */
fp = efopen("atom.xml", "w+b");
writeatom(fp);
fclose(fp);
/* cleanup */
git_repository_free(repo);
git_libgit2_shutdown();
return 0;
}