ui-tree: unify with ui-view, use path to select tree/blob

This teaches ui-tree to show both trees and blobs, thereby making ui-view
superfluous. At the same time, ui-tree is extended to honour the specified
path instead of requiering a tree/blob sha1.

8 files changed, 173 insertions, 111 deletions

diff --git a/Makefile b/Makefile
index 57f80f8..c2a5736 100644
--- a/Makefile
+++ b/Makefile
@@ -1,41 +1,41 @@
 CGIT_VERSION = 0.5
 
 prefix = /var/www/htdocs/cgit
 
 SHA1_HEADER = <openssl/sha.h>
 CACHE_ROOT = /var/cache/cgit
 CGIT_CONFIG = /etc/cgitrc
 CGIT_SCRIPT_NAME = cgit.cgi
 
 #
 # Let the user override the above settings.
 #
 -include cgit.conf
 
 EXTLIBS = git/libgit.a git/xdiff/lib.a -lz -lcrypto
 OBJECTS = shared.o cache.o parsing.o html.o ui-shared.o ui-repolist.o \
-        ui-summary.o ui-log.o ui-view.o ui-tree.o ui-commit.o ui-diff.o \
+        ui-summary.o ui-log.o ui-tree.o ui-commit.o ui-diff.o \
         ui-snapshot.o ui-blob.o
 
 CFLAGS += -Wall
 
 ifdef DEBUG
         CFLAGS += -g
 endif
 
 CFLAGS += -Igit
 CFLAGS += -DSHA1_HEADER='$(SHA1_HEADER)'
 CFLAGS += -DCGIT_VERSION='"$(CGIT_VERSION)"'
 CFLAGS += -DCGIT_CONFIG='"$(CGIT_CONFIG)"'
 CFLAGS += -DCGIT_SCRIPT_NAME='"$(CGIT_SCRIPT_NAME)"'
 
 
 #
 # If make is run on a nongit platform, get the git sources as a tarball.
 #
 GITVER = $(shell git version 2>/dev/null || echo nogit)
 ifeq ($(GITVER),nogit)
 GITURL = http://www.kernel.org/pub/software/scm/git/git-1.5.2.tar.bz2
 INITGIT = test -e git/git.c || ((curl "$(GITURL)" | tar -xj) && mv git-1.5.2 git)
 else
 INITGIT = ./submodules.sh -i
diff --git a/cgit.c b/cgit.c
index 34e590e..1c213c7 100644
--- a/cgit.c
+++ b/cgit.c
@@ -76,56 +76,53 @@ static void cgit_print_repo_page(struct cacheitem *item)
 
         if (cgit_cmd == CMD_BLOB) {
                 cgit_print_blob(item, cgit_query_sha1, cgit_query_path);
                 return;
         }
 
         show_search = (cgit_cmd == CMD_LOG);
         cgit_print_docstart(title, item);
         if (!cgit_cmd) {
                 cgit_print_pageheader("summary", show_search);
                 cgit_print_summary();
                 cgit_print_docend();
                 return;
         }
 
         cgit_print_pageheader(cgit_query_page, show_search);
 
         switch(cgit_cmd) {
         case CMD_LOG:
                 cgit_print_log(cgit_query_head, cgit_query_ofs,
                                cgit_max_commit_count, cgit_query_search,
                                cgit_query_path, 1);
                 break;
         case CMD_TREE:
-                cgit_print_tree(cgit_query_head, cgit_query_sha1, cgit_query_path);
+                cgit_print_tree(cgit_query_sha1, cgit_query_path);
                 break;
         case CMD_COMMIT:
                 cgit_print_commit(cgit_query_head);
                 break;
-        case CMD_VIEW:
-                cgit_print_view(cgit_query_sha1, cgit_query_path);
-                break;
         case CMD_DIFF:
                 cgit_print_diff(cgit_query_head, cgit_query_sha1, cgit_query_sha2,
                                 cgit_query_path);
                 break;
         default:
                 cgit_print_error("Invalid request");
         }
         cgit_print_docend();
 }
 
 static void cgit_fill_cache(struct cacheitem *item, int use_cache)
 {
         static char buf[PATH_MAX];
         int stdout2;
 
         getcwd(buf, sizeof(buf));
         item->st.st_mtime = time(NULL);
 
         if (use_cache) {
                 stdout2 = chk_positive(dup(STDOUT_FILENO),
                                        "Preserving STDOUT");
                 chk_zero(close(STDOUT_FILENO), "Closing STDOUT");
                 chk_positive(dup2(item->fd, STDOUT_FILENO), "Dup2(cachefile)");
         }
diff --git a/cgit.css b/cgit.css
index 8bd6bf4..30fde03 100644
--- a/cgit.css
+++ b/cgit.css
@@ -178,52 +178,64 @@ td.ls-blob, td.ls-dir, td.ls-mod {
         font-family: monospace;
 }
 
 div.ls-dir a {
         font-weight: bold;
 }
 
 th.filesize, td.filesize {
         text-align: right;
 }
 
 td.filesize {
         font-family: monospace;
 }
 
 td.links {
         font-size: 80%;
         padding-left: 2em;
 }
 
 td.filemode {
         font-family: monospace;
 }
 
-td.blob {
+table.blob {
+        margin-top: 0.5em;
+        border-top: solid 1px black;
+}
+
+table.blob td.no {
+        border-right: solid 1px black;
+        color: black;
+        background-color: #eee;
+        text-align: right;
+}
+
+table.blob td.txt {
         white-space: pre;
         font-family: monospace;
-        background-color: white;
+        padding-left: 0.5em;
 }
 
 table.nowrap td {
         white-space: nowrap;
 }
 
 table.commit-info {
         border-collapse: collapse;
         margin-top: 1.5em;
 }
 
 table.commit-info th {
         text-align: left;
         font-weight: normal;
         padding: 0.1em 1em 0.1em 0.1em;
 }
 
 table.commit-info td {
         font-weight: normal;
         padding: 0.1em 1em 0.1em 0.1em;
 }
 
 div.commit-subject {
         font-weight: bold;
diff --git a/cgit.h b/cgit.h
index 2f3fca1..b93e2e8 100644
--- a/cgit.h
+++ b/cgit.h
@@ -4,51 +4,50 @@
 
 #include <git-compat-util.h>
 #include <cache.h>
 #include <grep.h>
 #include <object.h>
 #include <tree.h>
 #include <commit.h>
 #include <tag.h>
 #include <diff.h>
 #include <diffcore.h>
 #include <refs.h>
 #include <revision.h>
 #include <log-tree.h>
 #include <archive.h>
 #include <xdiff/xdiff.h>
 
 
 /*
  * The valid cgit repo-commands
  */
 #define CMD_LOG      1
 #define CMD_COMMIT   2
 #define CMD_DIFF     3
 #define CMD_TREE     4
-#define CMD_VIEW     5
-#define CMD_BLOB     6
-#define CMD_SNAPSHOT 7
+#define CMD_BLOB     5
+#define CMD_SNAPSHOT 6
 
 
 /*
  * Dateformats used on misc. pages
  */
 #define FMT_LONGDATE "%Y-%m-%d %H:%M:%S"
 #define FMT_SHORTDATE "%Y-%m-%d"
 
 
 /*
  * Limits used for relative dates
  */
 #define TM_MIN    60
 #define TM_HOUR  (TM_MIN * 60)
 #define TM_DAY   (TM_HOUR * 24)
 #define TM_WEEK  (TM_DAY * 7)
 #define TM_YEAR  (TM_DAY * 365)
 #define TM_MONTH (TM_YEAR / 12.0)
 
 
 typedef void (*configfn)(const char *name, const char *value);
 typedef void (*filepair_fn)(struct diff_filepair *pair);
 typedef void (*linediff_fn)(char *line, int len);
 
@@ -194,35 +193,34 @@ extern void cgit_parse_url(const char *url);
 extern char *cache_safe_filename(const char *unsafe);
 extern int cache_lock(struct cacheitem *item);
 extern int cache_unlock(struct cacheitem *item);
 extern int cache_cancel_lock(struct cacheitem *item);
 extern int cache_exist(struct cacheitem *item);
 extern int cache_expired(struct cacheitem *item);
 
 extern char *cgit_repourl(const char *reponame);
 extern char *cgit_pageurl(const char *reponame, const char *pagename,
                           const char *query);
 
 extern void cgit_print_error(char *msg);
 extern void cgit_print_date(time_t secs, char *format);
 extern void cgit_print_age(time_t t, time_t max_relative, char *format);
 extern void cgit_print_docstart(char *title, struct cacheitem *item);
 extern void cgit_print_docend();
 extern void cgit_print_pageheader(char *title, int show_search);
 extern void cgit_print_snapshot_start(const char *mimetype,
                                       const char *filename,
                                       struct cacheitem *item);
 
 extern void cgit_print_repolist(struct cacheitem *item);
 extern void cgit_print_summary();
 extern void cgit_print_log(const char *tip, int ofs, int cnt, char *grep, char *path, int pager);
-extern void cgit_print_view(const char *hex, char *path);
 extern void cgit_print_blob(struct cacheitem *item, const char *hex, char *path);
-extern void cgit_print_tree(const char *rev, const char *hex, char *path);
+extern void cgit_print_tree(const char *rev, char *path);
 extern void cgit_print_commit(const char *hex);
 extern void cgit_print_diff(const char *head, const char *old_hex, const char *new_hex,
                             char *path);
 extern void cgit_print_snapshot(struct cacheitem *item, const char *hex,
                                 const char *format, const char *prefix,
                                 const char *filename);
 
 #endif /* CGIT_H */
diff --git a/shared.c b/shared.c
index b6d2fa1..c7cd8a5 100644
--- a/shared.c
+++ b/shared.c
@@ -38,49 +38,50 @@ int cgit_summary_log           =  0;
 
 int cgit_max_msg_len = 60;
 int cgit_max_repodesc_len = 60;
 int cgit_max_commit_count = 50;
 
 int cgit_query_has_symref = 0;
 int cgit_query_has_sha1   = 0;
 
 char *cgit_querystring  = NULL;
 char *cgit_query_repo   = NULL;
 char *cgit_query_page   = NULL;
 char *cgit_query_head   = NULL;
 char *cgit_query_search = NULL;
 char *cgit_query_sha1   = NULL;
 char *cgit_query_sha2   = NULL;
 char *cgit_query_path   = NULL;
 char *cgit_query_name   = NULL;
 int   cgit_query_ofs    = 0;
 
 int htmlfd = 0;
 
 
 int cgit_get_cmd_index(const char *cmd)
 {
-        static char *cmds[] = {"log", "commit", "diff", "tree", "view", "blob", "snapshot", NULL};
+        static char *cmds[] = {"log", "commit", "diff", "tree", "blob",
+                               "snapshot", NULL};
         int i;
 
         for(i = 0; cmds[i]; i++)
                 if (!strcmp(cmd, cmds[i]))
                         return i + 1;
         return 0;
 }
 
 int chk_zero(int result, char *msg)
 {
         if (result != 0)
                 die("%s: %s", msg, strerror(errno));
         return result;
 }
 
 int chk_positive(int result, char *msg)
 {
         if (result <= 0)
                 die("%s: %s", msg, strerror(errno));
         return result;
 }
 
 struct repoinfo *add_repo(const char *url)
 {
diff --git a/ui-commit.c b/ui-commit.c
index 1d12bbb..ed5384d 100644
--- a/ui-commit.c
+++ b/ui-commit.c
@@ -161,50 +161,49 @@ void cgit_print_commit(const char *hex)
         }
         commit = lookup_commit_reference(sha1);
         if (!commit) {
                 cgit_print_error(fmt("Bad commit reference: %s", hex));
                 return;
         }
         info = cgit_parse_commit(commit);
 
         html("<table class='commit-info'>\n");
         html("<tr><th>author</th><td>");
         html_txt(info->author);
         html(" ");
         html_txt(info->author_email);
         html("</td><td class='right'>");
         cgit_print_date(info->author_date, FMT_LONGDATE);
         html("</td></tr>\n");
         html("<tr><th>committer</th><td>");
         html_txt(info->committer);
         html(" ");
         html_txt(info->committer_email);
         html("</td><td class='right'>");
         cgit_print_date(info->committer_date, FMT_LONGDATE);
         html("</td></tr>\n");
         html("<tr><th>tree</th><td colspan='2' class='sha1'><a href='");
-        query = fmt("h=%s&amp;id=%s", sha1_to_hex(commit->object.sha1),
-                    sha1_to_hex(commit->tree->object.sha1));
+        query = fmt("h=%s", sha1_to_hex(commit->object.sha1));
         html_attr(cgit_pageurl(cgit_query_repo, "tree", query));
         htmlf("'>%s</a></td></tr>\n", sha1_to_hex(commit->tree->object.sha1));
               for (p = commit->parents; p ; p = p->next) {
                 parent = lookup_commit_reference(p->item->object.sha1);
                 if (!parent) {
                         html("<tr><td colspan='3'>");
                         cgit_print_error("Error reading parent commit");
                         html("</td></tr>");
                         continue;
                 }
                 html("<tr><th>parent</th>"
                      "<td colspan='2' class='sha1'>"
                      "<a href='");
                 query = fmt("h=%s", sha1_to_hex(p->item->object.sha1));
                 html_attr(cgit_pageurl(cgit_query_repo, "commit", query));
                 htmlf("'>%s</a> (<a href='",
                       sha1_to_hex(p->item->object.sha1));
                 query = fmt("id=%s&amp;id2=%s", sha1_to_hex(parent->tree->object.sha1),
                             sha1_to_hex(commit->tree->object.sha1));
                 html_attr(cgit_pageurl(cgit_query_repo, "diff", query));
                 html("'>diff</a>)</td></tr>");
         }
         if (cgit_repo->snapshots) {
                 htmlf("<tr><th>download</th><td colspan='2' class='sha1'><a href='");
diff --git a/ui-tree.c b/ui-tree.c
index cb57d8d..eb3d3ac 100644
--- a/ui-tree.c
+++ b/ui-tree.c
@@ -1,104 +1,214 @@
 /* ui-tree.c: functions for tree output
  *
  * Copyright (C) 2006 Lars Hjemli
  *
  * Licensed under GNU General Public License v2
  *   (see COPYING for full license text)
  */
 
 #include "cgit.h"
 
 char *curr_rev;
+char *match_path;
+int header = 0;
 
-static int print_entry(const unsigned char *sha1, const char *base,
-                       int baselen, const char *pathname, unsigned int mode,
-                       int stage)
+static void print_object(const unsigned char *sha1, char *path)
+{
+        enum object_type type;
+        unsigned char *buf;
+        unsigned long size, lineno, start, idx;
+
+        type = sha1_object_info(sha1, &size);
+        if (type == OBJ_BAD) {
+                cgit_print_error(fmt("Bad object name: %s",
+                                     sha1_to_hex(sha1)));
+                return;
+        }
+
+        buf = read_sha1_file(sha1, &type, &size);
+        if (!buf) {
+                cgit_print_error(fmt("Error reading object %s",
+                                     sha1_to_hex(sha1)));
+                return;
+        }
+
+        html("<table class='blob'>\n");
+        idx = 0;
+        start = 0;
+        lineno = 0;
+        while(idx < size) {
+                if (buf[idx] == '\n') {
+                        buf[idx] = '\0';
+                        htmlf("<tr><td class='no'>%d</td><td class='txt'>",
+                              ++lineno);
+                        html_txt(buf + start);
+                        html("</td></tr>\n");
+                        start = idx + 1;
+                }
+                idx++;
+        }
+        html("\n</td></tr>\n");
+        html("</table>\n");
+}
+
+
+static int ls_item(const unsigned char *sha1, const char *base, int baselen,
+                   const char *pathname, unsigned int mode, int stage)
 {
         char *name;
         enum object_type type;
         unsigned long size = 0;
+        char *url, *qry;
 
         name = xstrdup(pathname);
         type = sha1_object_info(sha1, &size);
         if (type == OBJ_BAD && !S_ISDIRLNK(mode)) {
                 htmlf("<tr><td colspan='3'>Bad object: %s %s</td></tr>",
                       name,
                       sha1_to_hex(sha1));
                 return 0;
         }
+        qry = fmt("h=%s&amp;path=%s%s%s", curr_rev,
+                  cgit_query_path ? cgit_query_path : "",
+                  cgit_query_path ? "/" : "", pathname);
+        url = cgit_pageurl(cgit_query_repo, "tree", qry);
         html("<tr><td class='filemode'>");
         html_filemode(mode);
         html("</td><td ");
         if (S_ISDIRLNK(mode)) {
                 htmlf("class='ls-mod'><a href='");
                 html_attr(fmt(cgit_repo->module_link,
                               name,
                               sha1_to_hex(sha1)));
         } else if (S_ISDIR(mode)) {
                 html("class='ls-dir'><a href='");
-                html_attr(cgit_pageurl(cgit_query_repo, "tree",
-                                       fmt("h=%s&amp;id=%s&amp;path=%s%s/",
-                                           curr_rev,
-                                           sha1_to_hex(sha1),
-                                           cgit_query_path ? cgit_query_path : "",
-                                           pathname)));
+                html_attr(url);
         } else {
                 html("class='ls-blob'><a href='");
-                html_attr(cgit_pageurl(cgit_query_repo, "view",
-                                      fmt("h=%s&amp;id=%s&amp;path=%s%s", curr_rev,
-                                          sha1_to_hex(sha1),
-                                          cgit_query_path ? cgit_query_path : "",
-                                          pathname)));
+                html_attr(url);
         }
         htmlf("'>%s</a></td>", name);
         htmlf("<td class='filesize'>%li</td>", size);
 
         html("<td class='links'><a href='");
-        html_attr(cgit_pageurl(cgit_query_repo, "log",
-                               fmt("h=%s&amp;path=%s%s",
-                                   curr_rev,
+        qry = fmt("h=%s&amp;path=%s%s%s", curr_rev,
                                    cgit_query_path ? cgit_query_path : "",
-                                   pathname)));
-        html("'>history</a></td>");
+                  cgit_query_path ? "/" : "", pathname);
+        url = cgit_pageurl(cgit_query_repo, "log", qry);
+        html_attr(url);
+        html("' class='button'>H</a></td>");
         html("</tr>\n");
         free(name);
         return 0;
 }
 
-void cgit_print_tree(const char *rev, const char *hex, char *path)
+static void ls_head()
+{
+        html("<table class='list'>\n");
+        html("<tr class='nohover'>");
+        html("<th class='left'>Mode</th>");
+        html("<th class='left'>Name</th>");
+        html("<th class='right'>Size</th>");
+        html("<th/>");
+        html("</tr>\n");
+        header = 1;
+}
+
+static void ls_tail()
+{
+        if (!header)
+                return;
+        html("</table>\n");
+        header = 0;
+}
+
+static void ls_tree(const unsigned char *sha1, char *path)
 {
         struct tree *tree;
+
+        tree = parse_tree_indirect(sha1);
+        if (!tree) {
+                cgit_print_error(fmt("Not a tree object: %s",
+                                     sha1_to_hex(sha1)));
+                return;
+        }
+
+        ls_head();
+        read_tree_recursive(tree, "", 0, 1, NULL, ls_item);
+        ls_tail();
+}
+
+
+static int walk_tree(const unsigned char *sha1, const char *base, int baselen,
+                     const char *pathname, unsigned mode, int stage)
+{
+        static int state;
+        static char buffer[PATH_MAX];
+        char *url;
+
+        if (state == 0) {
+                memcpy(buffer, base, baselen);
+                strcpy(buffer+baselen, pathname);
+                url = cgit_pageurl(cgit_query_repo, "tree",
+                                   fmt("h=%s&amp;path=%s", curr_rev, buffer));
+                htmlf(" / <a href='");
+                html_attr(url);
+                html("'>");
+                html_txt(xstrdup(pathname));
+                html("</a>");
+
+                if (strcmp(match_path, buffer))
+                        return READ_TREE_RECURSIVE;
+
+                if (S_ISDIR(mode)) {
+                        state = 1;
+                        ls_head();
+                        return READ_TREE_RECURSIVE;
+                } else {
+                        print_object(sha1, buffer);
+                        return 0;
+                }
+        }
+        ls_item(sha1, base, baselen, pathname, mode, stage);
+        return 0;
+}
+
+
+/*
+ * Show a tree or a blob
+ *   rev:  the commit pointing at the root tree object
+ *   path: path to tree or blob
+ */
+void cgit_print_tree(const char *rev, char *path)
+{
         unsigned char sha1[20];
         struct commit *commit;
+        const char *paths[] = {path, NULL};
+
+        if (!rev)
+                rev = cgit_query_head;
 
         curr_rev = xstrdup(rev);
-        get_sha1(rev, sha1);
+        if (get_sha1(rev, sha1)) {
+                cgit_print_error(fmt("Invalid revision name: %s", rev));
+                return;
+        }
         commit = lookup_commit_reference(sha1);
         if (!commit || parse_commit(commit)) {
-                cgit_print_error(fmt("Invalid head: %s", rev));
+                cgit_print_error(fmt("Invalid commit reference: %s", rev));
                 return;
         }
-        if (!hex)
-                hex = sha1_to_hex(commit->tree->object.sha1);
 
-        if (get_sha1_hex(hex, sha1)) {
-                cgit_print_error(fmt("Invalid object id: %s", hex));
-                return;
-        }
-        tree = parse_tree_indirect(sha1);
-        if (!tree) {
-                cgit_print_error(fmt("Not a tree object: %s", hex));
+        html("path: <a href='");
+        html_attr(cgit_pageurl(cgit_query_repo, "tree", fmt("h=%s", rev)));
+        html("'>root</a>");
+
+        if (path == NULL) {
+                ls_tree(commit->tree->object.sha1, NULL);
                 return;
         }
 
-        html_txt(path);
-        html("<table class='list'>\n");
-        html("<tr class='nohover'>");
-        html("<th class='left'>Mode</th>");
-        html("<th class='left'>Name</th>");
-        html("<th class='right'>Size</th>");
-        html("<th/>");
-        html("</tr>\n");
-        read_tree_recursive(tree, "", 0, 1, NULL, print_entry);
-        html("</table>\n");
+        match_path = path;
+        read_tree_recursive(commit->tree, NULL, 0, 0, paths, walk_tree);
+        ls_tail();
 }
diff --git a/ui-view.c b/ui-view.c
deleted file mode 100644
index 8873415..0000000
--- a/ui-view.c
+++ b/dev/null
@@ -1,55 +0,0 @@
-/* ui-view.c: functions to output _any_ object, given it's sha1
- *
- * Copyright (C) 2006 Lars Hjemli
- *
- * Licensed under GNU General Public License v2
- *   (see COPYING for full license text)
- */
-
-#include "cgit.h"
-
-void cgit_print_view(const char *hex, char *path)
-{
-        unsigned char sha1[20];
-        enum object_type type;
-        unsigned char *buf;
-        unsigned long size;
-
-        if (get_sha1_hex(hex, sha1)){
-                cgit_print_error(fmt("Bad hex value: %s", hex));
-                return;
-        }
-
-        type = sha1_object_info(sha1, &size);
-        if (type == OBJ_BAD) {
-                cgit_print_error(fmt("Bad object name: %s", hex));
-                return;
-        }
-
-        buf = read_sha1_file(sha1, &type, &size);
-        if (!buf) {
-                cgit_print_error(fmt("Error reading object %s", hex));
-                return;
-        }
-
-        buf[size] = '\0';
-        html("<table class='list'>\n");
-        html("<tr class='nohover'><th class='left'>");
-        if (path)
-                htmlf("%s (", path);
-        htmlf("%s %s, %li bytes", typename(type), hex, size);
-        if (path)
-                html(")");
-
-        html(" <a href='");
-        html_attr(cgit_pageurl(cgit_query_repo, "blob", 
-                               fmt("id=%s&amp;path=%s", 
-                                   hex,
-                                   path)));
-        html("'>download</a>");
-        html("</th></tr>\n");
-        html("<tr><td class='blob'>\n");
-        html_txt(buf);
-        html("\n</td></tr>\n");
-        html("</table>\n");
-}