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/* ui-blob.c: show blob content
*
* Copyright (C) 2008 Lars Hjemli
* Copyright (C) 2010 Jason A. Donenfeld <Jason@zx2c4.com>
*
* Licensed under GNU General Public License v2
* (see COPYING for full license text)
*/
#include "cgit.h"
#include "ui-blob.h"
#include "html.h"
#include "ui-shared.h"
struct walk_tree_context {
char *match_path;
unsigned char *matched_sha1;
int found_path;
};
static int walk_tree(const unsigned char *sha1, const char *base, int baselen,
const char *pathname, unsigned mode, int stage, void *cbdata)
{
struct walk_tree_context *walk_tree_ctx = cbdata;
if (strncmp(base, walk_tree_ctx->match_path, baselen)
|| strcmp(walk_tree_ctx->match_path + baselen, pathname))
return READ_TREE_RECURSIVE;
memmove(walk_tree_ctx->matched_sha1, sha1, 20);
walk_tree_ctx->found_path = 1;
return 0;
}
int cgit_print_file(char *path, const char *head)
{
unsigned char sha1[20];
enum object_type type;
char *buf;
unsigned long size;
struct commit *commit;
struct pathspec_item path_items = {
.match = path,
.len = strlen(path)
};
struct pathspec paths = {
.nr = 1,
.items = &path_items
};
struct walk_tree_context walk_tree_ctx = {
.match_path = path,
.matched_sha1 = sha1,
.found_path = 0
};
if (get_sha1(head, sha1))
return -1;
type = sha1_object_info(sha1, &size);
if (type == OBJ_COMMIT && path) {
commit = lookup_commit_reference(sha1);
read_tree_recursive(commit->tree, "", 0, 0, &paths, walk_tree, &walk_tree_ctx);
if (!walk_tree_ctx.found_path)
return -1;
type = sha1_object_info(sha1, &size);
}
if (type == OBJ_BAD)
return -1;
buf = read_sha1_file(sha1, &type, &size);
if (!buf)
return -1;
buf[size] = '\0';
html_raw(buf, size);
return 0;
}
void cgit_print_blob(const char *hex, char *path, const char *head)
{
unsigned char sha1[20];
enum object_type type;
char *buf;
unsigned long size;
struct commit *commit;
struct pathspec_item path_items = {
.match = path,
.len = path ? strlen(path) : 0
};
struct pathspec paths = {
.nr = 1,
.items = &path_items
};
struct walk_tree_context walk_tree_ctx = {
.match_path = path,
.matched_sha1 = sha1,
};
if (hex) {
if (get_sha1_hex(hex, sha1)) {
cgit_print_error(fmt("Bad hex value: %s", hex));
return;
}
} else {
if (get_sha1(head, sha1)) {
cgit_print_error(fmt("Bad ref: %s", head));
return;
}
}
type = sha1_object_info(sha1, &size);
if ((!hex) && type == OBJ_COMMIT && path) {
commit = lookup_commit_reference(sha1);
read_tree_recursive(commit->tree, "", 0, 0, &paths, walk_tree, &walk_tree_ctx);
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';
ctx.page.mimetype = ctx.qry.mimetype;
if (!ctx.page.mimetype) {
if (buffer_is_binary(buf, size))
ctx.page.mimetype = "application/octet-stream";
else
ctx.page.mimetype = "text/plain";
}
ctx.page.filename = path;
cgit_print_http_headers(&ctx);
html_raw(buf, size);
}
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