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authorLars Hjemli <hjemli@gmail.com>2006-12-09 15:18:17 +0100
committerLars Hjemli <hjemli@gmail.com>2006-12-09 15:18:17 +0100
commit0d169ada2ba81210ab1191a5f2212662e90db77e (patch)
tree402b54583db269323ebb28e5fbf2075c4c1b3d85
downloadcgit-0d169ada2ba81210ab1191a5f2212662e90db77e.tar.xz
cgit-0d169ada2ba81210ab1191a5f2212662e90db77e.zip
Import cgit prototype from git tree
This enables basic cgit functionality, using libgit.a and xdiff/lib.a from git + a custom "git.h" + openssl for sha1 routines. Signed-off-by: Lars Hjemli <hjemli@gmail.com>
-rw-r--r--Makefile24
-rw-r--r--cgit.c410
-rw-r--r--cgit.css63
-rw-r--r--cgit.h21
-rw-r--r--config.c73
-rw-r--r--git.h399
-rw-r--r--html.c100
7 files changed, 1090 insertions, 0 deletions
diff --git a/Makefile b/Makefile
new file mode 100644
index 0000000..1470c0a
--- /dev/null
+++ b/Makefile
@@ -0,0 +1,24 @@
+
+INSTALL_BIN = /var/www/htdocs/cgit.cgi
+INSTALL_CSS = /var/www/htdocs/cgit.css
+
+EXTLIBS = ../git/libgit.a ../git/xdiff/lib.a -lz -lcrypto
+OBJECTS = cgit.o config.o html.o
+
+all: cgit
+
+install: all
+ install cgit $(INSTALL_BIN)
+ install cgit.css $(INSTALL_CSS)
+
+clean:
+ rm -f cgit *.o
+
+cgit: $(OBJECTS)
+ $(CC) -o cgit $(OBJECTS) $(EXTLIBS)
+
+cgit.o: cgit.h git.h config.o html.o
+
+config.o: cgit.h git.h html.c
+
+html.o: cgit.h git.h html.c
diff --git a/cgit.c b/cgit.c
new file mode 100644
index 0000000..4c14f77
--- /dev/null
+++ b/cgit.c
@@ -0,0 +1,410 @@
+#include "cgit.h"
+
+static const char cgit_doctype[] =
+"<!DOCTYPE html PUBLIC \"-//W3C//DTD XHTML 1.0 Transitional//EN\"\n"
+" \"http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd\">\n";
+
+static const char cgit_error[] =
+"<div class='error'>%s</div>";
+
+static const char cgit_lib_error[] =
+"<div class='error'>%s: %s</div>";
+
+
+char *cgit_root = "/var/git";
+char *cgit_root_title = "Git repository browser";
+char *cgit_css = "/cgit.css";
+char *cgit_logo = "/git-logo.png";
+char *cgit_logo_link = "http://www.kernel.org/pub/software/scm/git/docs/";
+char *cgit_virtual_root = NULL;
+
+char *cgit_repo_name = NULL;
+char *cgit_repo_desc = NULL;
+char *cgit_repo_owner = NULL;
+
+char *cgit_query_repo = NULL;
+char *cgit_query_page = NULL;
+char *cgit_query_head = NULL;
+
+int cgit_parse_query(char *txt, configfn fn)
+{
+ char *t = txt, *value = NULL, c;
+
+ if (!txt)
+ return 0;
+
+ while((c=*t) != '\0') {
+ if (c=='=') {
+ *t = '\0';
+ value = t+1;
+ } else if (c=='&') {
+ *t = '\0';
+ (*fn)(txt, value);
+ txt = t+1;
+ value = NULL;
+ }
+ t++;
+ }
+ if (t!=txt)
+ (*fn)(txt, value);
+ return 0;
+}
+
+void cgit_global_config_cb(const char *name, const char *value)
+{
+ if (!strcmp(name, "root"))
+ cgit_root = xstrdup(value);
+ else if (!strcmp(name, "root-title"))
+ cgit_root_title = xstrdup(value);
+ else if (!strcmp(name, "css"))
+ cgit_css = xstrdup(value);
+ else if (!strcmp(name, "logo"))
+ cgit_logo = xstrdup(value);
+ else if (!strcmp(name, "logo-link"))
+ cgit_logo_link = xstrdup(value);
+ else if (!strcmp(name, "virtual-root"))
+ cgit_virtual_root = xstrdup(value);
+}
+
+void cgit_repo_config_cb(const char *name, const char *value)
+{
+ if (!strcmp(name, "name"))
+ cgit_repo_name = xstrdup(value);
+ else if (!strcmp(name, "desc"))
+ cgit_repo_desc = xstrdup(value);
+ else if (!strcmp(name, "owner"))
+ cgit_repo_owner = xstrdup(value);
+}
+
+void cgit_querystring_cb(const char *name, const char *value)
+{
+ if (!strcmp(name,"r"))
+ cgit_query_repo = xstrdup(value);
+ else if (!strcmp(name, "p"))
+ cgit_query_page = xstrdup(value);
+ else if (!strcmp(name, "h"))
+ cgit_query_head = xstrdup(value);
+}
+
+char *cgit_repourl(const char *reponame)
+{
+ if (cgit_virtual_root) {
+ return fmt("%s/%s/", cgit_virtual_root, reponame);
+ } else {
+ return fmt("?r=%s", reponame);
+ }
+}
+
+char *cgit_pageurl(const char *reponame, const char *pagename,
+ const char *query)
+{
+ if (cgit_virtual_root) {
+ return fmt("%s/%s/%s/?%s", cgit_virtual_root, reponame,
+ pagename, query);
+ } else {
+ return fmt("?r=%s&p=%s&%s", reponame, pagename, query);
+ }
+}
+
+static int cgit_print_branch_cb(const char *refname, const unsigned char *sha1,
+ int flags, void *cb_data)
+{
+ struct commit *commit;
+ char buf[256], *url;
+
+ commit = lookup_commit(sha1);
+ if (commit && !parse_commit(commit)){
+ html("<tr><td>");
+ url = cgit_pageurl(cgit_query_repo, "log",
+ fmt("h=%s", refname));
+ html_link_open(url, NULL, NULL);
+ strncpy(buf, refname, sizeof(buf));
+ html_txt(buf);
+ html_link_close();
+ html("</td><td>");
+ pretty_print_commit(CMIT_FMT_ONELINE, commit, ~0, buf,
+ sizeof(buf), 0, NULL, NULL, 0);
+ html_txt(buf);
+ html("</td></tr>\n");
+ } else {
+ html("<tr><td>");
+ html_txt(buf);
+ html("</td><td>");
+ htmlf("*** bad ref %s", sha1_to_hex(sha1));
+ html("</td></tr>\n");
+ }
+ return 0;
+}
+
+static void cgit_print_docstart(char *title)
+{
+ html("Content-Type: text/html; charset=utf-8\n");
+ html("\n");
+ html(cgit_doctype);
+ html("<html>\n");
+ html("<head>\n");
+ html("<title>");
+ html_txt(title);
+ html("</title>\n");
+ html("<link rel='stylesheet' type='text/css' href='");
+ html_attr(cgit_css);
+ html("'/>\n");
+ html("</head>\n");
+ html("<body>\n");
+}
+
+static void cgit_print_docend()
+{
+ html("</body>\n</html>\n");
+}
+
+static void cgit_print_pageheader(char *title)
+{
+ html("<div id='header'>");
+ htmlf("<a href='%s'>", cgit_logo_link);
+ htmlf("<img id='logo' src='%s'/>\n", cgit_logo);
+ htmlf("</a>");
+ html_txt(title);
+ html("</div>");
+}
+
+static void cgit_print_repolist()
+{
+ DIR *d;
+ struct dirent *de;
+ struct stat st;
+ char *name;
+
+ cgit_print_docstart(cgit_root_title);
+ cgit_print_pageheader(cgit_root_title);
+
+ if (!(d = opendir("."))) {
+ htmlf(cgit_lib_error, "Unable to scan repository directory",
+ strerror(errno));
+ cgit_print_docend();
+ return;
+ }
+
+ html("<h2>Repositories</h2>\n");
+ html("<table class='list'>");
+ html("<tr><th>Name</th><th>Description</th><th>Owner</th></tr>\n");
+ while ((de = readdir(d)) != NULL) {
+ if (de->d_name[0] == '.')
+ continue;
+ if (stat(de->d_name, &st) < 0)
+ continue;
+ if (!S_ISDIR(st.st_mode))
+ continue;
+
+ cgit_repo_name = cgit_repo_desc = cgit_repo_owner = NULL;
+ name = fmt("%s/.git/info/cgit", de->d_name);
+ if (cgit_read_config(name, cgit_repo_config_cb))
+ continue;
+
+ html("<tr><td>");
+ html_link_open(cgit_repourl(de->d_name), NULL, NULL);
+ html_txt(cgit_repo_name);
+ html_link_close();
+ html("</td><td>");
+ html_txt(cgit_repo_desc);
+ html("</td><td>");
+ html_txt(cgit_repo_owner);
+ html("</td></tr>\n");
+ }
+ closedir(d);
+ html("</table>");
+ cgit_print_docend();
+}
+
+static void cgit_print_branches()
+{
+ html("<table class='list'>");
+ html("<tr><th>Branch name</th><th>Head commit</th></tr>\n");
+ for_each_branch_ref(cgit_print_branch_cb, NULL);
+ html("</table>");
+}
+
+static int get_one_line(char *txt)
+{
+ char *t;
+
+ for(t=txt; *t != '\n' && t != '\0'; t++)
+ ;
+ *t = '\0';
+ return t-txt-1;
+}
+
+static void cgit_print_commit_shortlog(struct commit *commit)
+{
+ char *h, *t, *p;
+ char *tree = NULL, *author = NULL, *subject = NULL;
+ int len;
+ time_t sec;
+ struct tm *time;
+ char buf[32];
+
+ h = t = commit->buffer;
+
+ if (strncmp(h, "tree ", 5))
+ die("Bad commit format: %s",
+ sha1_to_hex(commit->object.sha1));
+
+ len = get_one_line(h);
+ tree = h+5;
+ h += len + 2;
+
+ while (!strncmp(h, "parent ", 7))
+ h += get_one_line(h) + 2;
+
+ if (!strncmp(h, "author ", 7)) {
+ author = h+7;
+ h += get_one_line(h) + 2;
+ t = author;
+ while(t!=h && *t!='<')
+ t++;
+ *t='\0';
+ p = t;
+ while(--t!=author && *t==' ')
+ *t='\0';
+ while(++p!=h && *p!='>')
+ ;
+ while(++p!=h && !isdigit(*p))
+ ;
+
+ t = p;
+ while(++p && isdigit(*p))
+ ;
+ *p = '\0';
+ sec = atoi(t);
+ time = gmtime(&sec);
+ }
+
+ while((len = get_one_line(h)) > 0)
+ h += len+2;
+
+ h++;
+ len = get_one_line(h);
+
+ subject = h;
+
+ html("<tr><td>");
+ strftime(buf, sizeof(buf), "%Y-%m-%d %H:%M:%S", time);
+ html_txt(buf);
+ html("</td><td>");
+ char *qry = fmt("h=%s", sha1_to_hex(commit->object.sha1));
+ char *url = cgit_pageurl(cgit_query_repo, "view", qry);
+ html_link_open(url, NULL, NULL);
+ html_txt(subject);
+ html_link_close();
+ html("</td><td>");
+ html_txt(author);
+ html("</td></tr>\n");
+}
+
+static void cgit_print_log(const char *tip, int ofs, int cnt)
+{
+ struct rev_info rev;
+ struct commit *commit;
+ const char *argv[2] = {NULL, tip};
+ int n = 0;
+
+ 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(2, argv, &rev, NULL);
+ prepare_revision_walk(&rev);
+
+ html("<h2>Log</h2>");
+ html("<table class='list'>");
+ html("<tr><th>Date</th><th>Message</th><th>Author</th></tr>\n");
+ while ((commit = get_revision(&rev)) != NULL && n++ < 100) {
+ cgit_print_commit_shortlog(commit);
+ free(commit->buffer);
+ commit->buffer = NULL;
+ free_commit_list(commit->parents);
+ commit->parents = NULL;
+ }
+ html("</table>\n");
+}
+
+static void cgit_print_repo_summary()
+{
+ html("<h2>");
+ html_txt("Repo summary page");
+ html("</h2>");
+ cgit_print_branches();
+}
+
+static void cgit_print_object(char *hex)
+{
+ unsigned char sha1[20];
+ //struct object *object;
+ char type[20];
+ unsigned char *buf;
+ unsigned long size;
+
+ if (get_sha1_hex(hex, sha1)){
+ htmlf(cgit_error, "Bad hex value");
+ return;
+ }
+
+ if (sha1_object_info(sha1, type, NULL)){
+ htmlf(cgit_error, "Bad object name");
+ return;
+ }
+
+ buf = read_sha1_file(sha1, type, &size);
+ if (!buf) {
+ htmlf(cgit_error, "Error reading object");
+ return;
+ }
+
+ buf[size] = '\0';
+ html("<h2>Object view</h2>");
+ htmlf("sha1=%s<br/>type=%s<br/>size=%i<br/>", hex, type, size);
+ html("<pre>");
+ html_txt(buf);
+ html("</pre>");
+}
+
+static void cgit_print_repo_page()
+{
+ if (chdir(cgit_query_repo) ||
+ cgit_read_config(".git/info/cgit", cgit_repo_config_cb)) {
+ char *title = fmt("%s - %s", cgit_root_title, "Bad request");
+ cgit_print_docstart(title);
+ cgit_print_pageheader(title);
+ htmlf(cgit_lib_error, "Unable to scan repository",
+ strerror(errno));
+ cgit_print_docend();
+ return;
+ }
+
+ char *title = fmt("%s - %s", cgit_repo_name, cgit_repo_desc);
+ cgit_print_docstart(title);
+ cgit_print_pageheader(title);
+ if (!cgit_query_page)
+ cgit_print_repo_summary();
+ else if (!strcmp(cgit_query_page, "log")) {
+ cgit_print_log(cgit_query_head, 0, 100);
+ } else if (!strcmp(cgit_query_page, "view")) {
+ cgit_print_object(cgit_query_head);
+ }
+ cgit_print_docend();
+}
+
+int main(int argc, const char **argv)
+{
+ if (cgit_read_config("/etc/cgitrc", cgit_global_config_cb))
+ die("Error reading config: %d %s", errno, strerror(errno));
+
+ chdir(cgit_root);
+ cgit_parse_query(getenv("QUERY_STRING"), cgit_querystring_cb);
+ if (cgit_query_repo)
+ cgit_print_repo_page();
+ else
+ cgit_print_repolist();
+ return 0;
+}
diff --git a/cgit.css b/cgit.css
new file mode 100644
index 0000000..3ed0c22
--- /dev/null
+++ b/cgit.css
@@ -0,0 +1,63 @@
+body {
+ font-family: arial;
+ font-size: normal;
+ background: white;
+ padding: 0em;
+ margin: 0.5em;
+}
+
+
+h2 {
+ font-size: normal;
+ font-weight: bold;
+ margin-bottom: 0.1em;
+}
+
+
+table.list {
+ border: solid 1px black;
+ border-collapse: collapse;
+ border: solid 1px #aaa;
+}
+
+table.list th {
+ text-align: left;
+ font-weight: bold;
+ background: #ddd;
+ border-bottom: solid 1px #aaa;
+ padding: 0.1em 0.5em 0.1em;
+ vertical-align: baseline;
+}
+table.list td {
+ border: none;
+ padding: 0.1em 0.5em;
+ background: white;
+}
+
+img {
+ border: none;
+}
+
+
+div#header {
+ background-color: #ddd;
+ padding: 0.25em 0.25em 0.25em 0.5em;
+ font-size: 150%;
+ font-weight: bold;
+ border: solid 1px #aaa;
+ vertical-align: middle;
+}
+
+div#header img#logo {
+ float: right;
+}
+
+div#content {
+ margin: 0.5em 0.5em;
+}
+
+div.error {
+ color: red;
+ font-weight: bold;
+ margin: 1em 2em;
+} \ No newline at end of file
diff --git a/cgit.h b/cgit.h
new file mode 100644
index 0000000..19f7ba7
--- /dev/null
+++ b/cgit.h
@@ -0,0 +1,21 @@
+#ifndef CGIT_H
+#define CGIT_H
+
+#include "git.h"
+#include <openssl/sha.h>
+
+extern char *fmt(const char *format,...);
+
+extern void html(const char *txt);
+extern void htmlf(const char *format,...);
+extern void html_txt(char *txt);
+extern void html_attr(char *txt);
+
+extern void html_link_open(char *url, char *title, char *class);
+extern void html_link_close(void);
+
+typedef void (*configfn)(const char *name, const char *value);
+
+extern int cgit_read_config(const char *filename, configfn fn);
+
+#endif /* CGIT_H */
diff --git a/config.c b/config.c
new file mode 100644
index 0000000..858ab69
--- /dev/null
+++ b/config.c
@@ -0,0 +1,73 @@
+#include "cgit.h"
+
+int next_char(FILE *f)
+{
+ int c = fgetc(f);
+ if (c=='\r') {
+ c = fgetc(f);
+ if (c!='\n') {
+ ungetc(c, f);
+ c = '\r';
+ }
+ }
+ return c;
+}
+
+void skip_line(FILE *f)
+{
+ int c;
+
+ while((c=next_char(f)) && c!='\n' && c!=EOF)
+ ;
+}
+
+int read_config_line(FILE *f, char *line, const char **value, int bufsize)
+{
+ int i = 0, isname = 0;
+
+ *value = NULL;
+ while(i<bufsize-1) {
+ int c = next_char(f);
+ if (!isname && (c=='#' || c==';')) {
+ skip_line(f);
+ continue;
+ }
+ if (!isname && isblank(c))
+ continue;
+
+ if (c=='=' && !*value) {
+ line[i] = 0;
+ *value = &line[i+1];
+ } else if (c=='\n' && !isname) {
+ i = 0;
+ continue;
+ } else if (c=='\n' || c==EOF) {
+ line[i] = 0;
+ break;
+ } else {
+ line[i]=c;
+ }
+ isname = 1;
+ i++;
+ }
+ line[i+1] = 0;
+ return i;
+}
+
+int cgit_read_config(const char *filename, configfn fn)
+{
+ int ret = 0, len;
+ char line[256];
+ const char *value;
+ FILE *f = fopen(filename, "r");
+
+ if (!f)
+ return -1;
+
+ while(len = read_config_line(f, line, &value, sizeof(line)))
+ (*fn)(line, value);
+
+ fclose(f);
+ return ret;
+}
+
diff --git a/git.h b/git.h
new file mode 100644
index 0000000..443f216
--- /dev/null
+++ b/git.h
@@ -0,0 +1,399 @@
+#ifndef GIT_H
+#define GIT_H
+
+
+/*
+ * from git:git-compat-util.h
+ */
+
+
+#ifndef FLEX_ARRAY
+#if defined(__GNUC__) && (__GNUC__ < 3)
+#define FLEX_ARRAY 0
+#else
+#define FLEX_ARRAY /* empty */
+#endif
+#endif
+
+
+#include <unistd.h>
+#include <stdio.h>
+#include <sys/stat.h>
+#include <fcntl.h>
+#include <stddef.h>
+#include <stdlib.h>
+#include <stdarg.h>
+#include <string.h>
+#include <errno.h>
+#include <limits.h>
+#include <sys/param.h>
+#include <netinet/in.h>
+#include <sys/types.h>
+#include <dirent.h>
+#include <time.h>
+
+
+static inline char* xstrdup(const char *str)
+{
+ char *ret = strdup(str);
+ if (!ret)
+ die("Out of memory, strdup failed");
+ return ret;
+}
+
+static inline void *xmalloc(size_t size)
+{
+ void *ret = malloc(size);
+ if (!ret && !size)
+ ret = malloc(1);
+ if (!ret)
+ die("Out of memory, malloc failed");
+#ifdef XMALLOC_POISON
+ memset(ret, 0xA5, size);
+#endif
+ return ret;
+}
+
+static inline void *xrealloc(void *ptr, size_t size)
+{
+ void *ret = realloc(ptr, size);
+ if (!ret && !size)
+ ret = realloc(ptr, 1);
+ if (!ret)
+ die("Out of memory, realloc failed");
+ return ret;
+}
+
+static inline void *xcalloc(size_t nmemb, size_t size)
+{
+ void *ret = calloc(nmemb, size);
+ if (!ret && (!nmemb || !size))
+ ret = calloc(1, 1);
+ if (!ret)
+ die("Out of memory, calloc failed");
+ return ret;
+}
+
+static inline ssize_t xread(int fd, void *buf, size_t len)
+{
+ ssize_t nr;
+ while (1) {
+ nr = read(fd, buf, len);
+ if ((nr < 0) && (errno == EAGAIN || errno == EINTR))
+ continue;
+ return nr;
+ }
+}
+
+static inline ssize_t xwrite(int fd, const void *buf, size_t len)
+{
+ ssize_t nr;
+ while (1) {
+ nr = write(fd, buf, len);
+ if ((nr < 0) && (errno == EAGAIN || errno == EINTR))
+ continue;
+ return nr;
+ }
+}
+
+
+
+
+/*
+ * from git:cache.h
+ */
+
+
+/* Convert to/from hex/sha1 representation */
+#define MINIMUM_ABBREV 4
+#define DEFAULT_ABBREV 7
+
+
+extern void * read_sha1_file(const unsigned char *sha1, char *type, unsigned long *size);
+
+
+
+
+/*
+ * from git:object.h
+ */
+
+struct object_list {
+ struct object *item;
+ struct object_list *next;
+};
+
+struct object_refs {
+ unsigned count;
+ struct object *base;
+ struct object *ref[FLEX_ARRAY]; /* more */
+};
+
+struct object_array {
+ unsigned int nr;
+ unsigned int alloc;
+ struct object_array_entry {
+ struct object *item;
+ const char *name;
+ } *objects;
+};
+
+#define TYPE_BITS 3
+#define FLAG_BITS 27
+
+/*
+ * The object type is stored in 3 bits.
+ */
+struct object {
+ unsigned parsed : 1;
+ unsigned used : 1;
+ unsigned type : TYPE_BITS;
+ unsigned flags : FLAG_BITS;
+ unsigned char sha1[20];
+};
+
+
+/*
+ * from git:tree.h
+ */
+
+struct tree {
+ struct object object;
+ void *buffer;
+ unsigned long size;
+};
+
+
+
+
+/* from git:commit.h */
+
+struct commit_list {
+ struct commit *item;
+ struct commit_list *next;
+};
+
+struct commit {
+ struct object object;
+ void *util;
+ unsigned long date;
+ struct commit_list *parents;
+ struct tree *tree;
+ char *buffer;
+};
+
+
+/* Commit formats */
+enum cmit_fmt {
+ CMIT_FMT_RAW,
+ CMIT_FMT_MEDIUM,
+ CMIT_FMT_DEFAULT = CMIT_FMT_MEDIUM,
+ CMIT_FMT_SHORT,
+ CMIT_FMT_FULL,
+ CMIT_FMT_FULLER,
+ CMIT_FMT_ONELINE,
+ CMIT_FMT_EMAIL,
+
+ CMIT_FMT_UNSPECIFIED,
+};
+
+
+
+struct commit *lookup_commit(const unsigned char *sha1);
+struct commit *lookup_commit_reference(const unsigned char *sha1);
+struct commit *lookup_commit_reference_gently(const unsigned char *sha1,
+ int quiet);
+
+typedef void (*topo_sort_set_fn_t)(struct commit*, void *data);
+typedef void* (*topo_sort_get_fn_t)(struct commit*);
+
+
+
+
+/*
+ * from git:diff.h
+ */
+
+
+struct rev_info;
+struct diff_options;
+struct diff_queue_struct;
+
+typedef void (*change_fn_t)(struct diff_options *options,
+ unsigned old_mode, unsigned new_mode,
+ const unsigned char *old_sha1,
+ const unsigned char *new_sha1,
+ const char *base, const char *path);
+
+typedef void (*add_remove_fn_t)(struct diff_options *options,
+ int addremove, unsigned mode,
+ const unsigned char *sha1,
+ const char *base, const char *path);
+
+typedef void (*diff_format_fn_t)(struct diff_queue_struct *q,
+ struct diff_options *options, void *data);
+
+#define DIFF_FORMAT_RAW 0x0001
+#define DIFF_FORMAT_DIFFSTAT 0x0002
+#define DIFF_FORMAT_NUMSTAT 0x0004
+#define DIFF_FORMAT_SUMMARY 0x0008
+#define DIFF_FORMAT_PATCH 0x0010
+
+/* These override all above */
+#define DIFF_FORMAT_NAME 0x0100
+#define DIFF_FORMAT_NAME_STATUS 0x0200
+#define DIFF_FORMAT_CHECKDIFF 0x0400
+
+/* Same as output_format = 0 but we know that -s flag was given
+ * and we should not give default value to output_format.
+ */
+#define DIFF_FORMAT_NO_OUTPUT 0x0800
+
+#define DIFF_FORMAT_CALLBACK 0x1000
+
+struct diff_options {
+ const char *filter;
+ const char *orderfile;
+ const char *pickaxe;
+ const char *single_follow;
+ unsigned recursive:1,
+ tree_in_recursive:1,
+ binary:1,
+ text:1,
+ full_index:1,
+ silent_on_remove:1,
+ find_copies_harder:1,
+ color_diff:1,
+ color_diff_words:1;
+ int context;
+ int break_opt;
+ int detect_rename;
+ int line_termination;
+ int output_format;
+ int pickaxe_opts;
+ int rename_score;
+ int reverse_diff;
+ int rename_limit;
+ int setup;
+ int abbrev;
+ const char *msg_sep;
+ const char *stat_sep;
+ long xdl_opts;
+
+ int stat_width;
+ int stat_name_width;
+
+ int nr_paths;
+ const char **paths;
+ int *pathlens;
+ change_fn_t change;
+ add_remove_fn_t add_remove;
+ diff_format_fn_t format_callback;
+ void *format_callback_data;
+};
+
+enum color_diff {
+ DIFF_RESET = 0,
+ DIFF_PLAIN = 1,
+ DIFF_METAINFO = 2,
+ DIFF_FRAGINFO = 3,
+ DIFF_FILE_OLD = 4,
+ DIFF_FILE_NEW = 5,
+ DIFF_COMMIT = 6,
+ DIFF_WHITESPACE = 7,
+};
+
+
+
+
+
+
+
+/*
+ * from git:revision.h
+ */
+
+struct rev_info;
+struct log_info;
+
+typedef void (prune_fn_t)(struct rev_info *revs, struct commit *commit);
+
+struct rev_info {
+ /* Starting list */
+ struct commit_list *commits;
+ struct object_array pending;
+
+ /* Basic information */
+ const char *prefix;
+ void *prune_data;
+ prune_fn_t *prune_fn;
+
+ /* Traversal flags */
+ unsigned int dense:1,
+ no_merges:1,
+ no_walk:1,
+ remove_empty_trees:1,
+ simplify_history:1,
+ lifo:1,
+ topo_order:1,
+ tag_objects:1,
+ tree_objects:1,
+ blob_objects:1,
+ edge_hint:1,
+ limited:1,
+ unpacked:1, /* see also ignore_packed below */
+ boundary:1,
+ parents:1;
+
+ /* Diff flags */
+ unsigned int diff:1,
+ full_diff:1,
+ show_root_diff:1,
+ no_commit_id:1,
+ verbose_header:1,
+ ignore_merges:1,
+ combine_merges:1,
+ dense_combined_merges:1,
+ always_show_header:1;
+
+ /* Format info */
+ unsigned int shown_one:1,
+ abbrev_commit:1,
+ relative_date:1;
+
+ const char **ignore_packed; /* pretend objects in these are unpacked */
+ int num_ignore_packed;
+
+ unsigned int abbrev;
+ enum cmit_fmt commit_format;
+ struct log_info *loginfo;
+ int nr, total;
+ const char *mime_boundary;
+ const char *message_id;
+ const char *ref_message_id;
+ const char *add_signoff;
+ const char *extra_headers;
+
+ /* Filter by commit log message */
+ struct grep_opt *grep_filter;
+
+ /* special limits */
+ int max_count;
+ unsigned long max_age;
+ unsigned long min_age;
+
+ /* diff info for patches and for paths limiting */
+ struct diff_options diffopt;
+ struct diff_options pruning;
+
+ topo_sort_set_fn_t topo_setter;
+ topo_sort_get_fn_t topo_getter;
+};
+
+
+extern struct commit *get_revision(struct rev_info *revs);
+
+
+
+
+#endif /* GIT_H */
diff --git a/html.c b/html.c
new file mode 100644
index 0000000..5780dc1
--- /dev/null
+++ b/html.c
@@ -0,0 +1,100 @@
+#include "cgit.h"
+
+char *fmt(const char *format, ...)
+{
+ static char buf[8][1024];
+ static int bufidx;
+ int len;
+ va_list args;
+
+ bufidx++;
+ bufidx &= 7;
+
+ va_start(args, format);
+ len = vsnprintf(buf[bufidx], sizeof(buf[bufidx]), format, args);
+ va_end(args);
+ if (len>sizeof(buf[bufidx]))
+ die("[html.c] string truncated: %s", format);
+ return buf[bufidx];
+}
+
+void html(const char *txt)
+{
+ fputs(txt, stdout);
+}
+
+void htmlf(const char *format, ...)
+{
+ va_list args;
+
+ va_start(args, format);
+ vprintf(format, args);
+ va_end(args);
+}
+
+void html_txt(char *txt)
+{
+ char *t = txt;
+ while(*t){
+ int c = *t;
+ if (c=='<' || c=='>' || c=='&') {
+ *t = '\0';
+ html(txt);
+ *t = c;
+ if (c=='>')
+ html("&gt;");
+ else if (c=='<')
+ html("&lt;");
+ else if (c=='&')
+ html("&amp;");
+ txt = t+1;
+ }
+ t++;
+ }
+ if (t!=txt)
+ html(txt);
+}
+
+
+void html_attr(char *txt)
+{
+ char *t = txt;
+ while(*t){
+ int c = *t;
+ if (c=='<' || c=='>' || c=='\'') {
+ *t = '\0';
+ html(txt);
+ *t = c;
+ if (c=='>')
+ html("&gt;");
+ else if (c=='<')
+ html("&lt;");
+ else if (c=='\'')
+ html("&quote;");
+ txt = t+1;
+ }
+ t++;
+ }
+ if (t!=txt)
+ html(txt);
+}
+
+void html_link_open(char *url, char *title, char *class)
+{
+ html("<a href='");
+ html_attr(url);
+ if (title) {
+ html("' title='");
+ html_attr(title);
+ }
+ if (class) {
+ html("' class='");
+ html_attr(class);
+ }
+ html("'>");
+}
+
+void html_link_close(void)
+{
+ html("</a>");
+}