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Convert cgit_print_error to a variadic function

Browse Source 
This removes many uses of "fmt" which uses a fixed size static pool of
fixed size buffers.  Instead of relying on these, we now pass around
argument lists for as long as possible before using a strbuf to render
content of an arbitrary size.

Signed-off-by: John Keeping <john@keeping.me.uk>
This commit is contained in:
John Keeping 2013-04-06 11:23:52 +01:00 committed by Jason A. Donenfeld
parent d2e20e3814
commit ed5bd30ebe
11 changed files with 57 additions and 45 deletions
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18
cgit.c
View File

@ -459,7 +459,6 @@ static char *guess_defbranch(void)
static int prepare_repo_cmd(struct cgit_context *ctx)
{
char *tmp;
unsigned char sha1[20];
int nongit = 0;
int rc;
@ -467,17 +466,16 @@ static int prepare_repo_cmd(struct cgit_context *ctx)
setenv("GIT_DIR", ctx->repo->path, 1);
setup_git_directory_gently(&nongit);
if (nongit) {
const char *name = ctx->repo->name;
rc = errno;
ctx->page.title = fmt("%s - %s", ctx->cfg.root_title,
"config error");
tmp = fmt("Failed to open %s: %s",
ctx->repo->name,
rc ? strerror(rc) : "Not a valid git repository");
ctx->repo = NULL;
cgit_print_http_headers(ctx);
cgit_print_docstart(ctx);
cgit_print_pageheader(ctx);
cgit_print_error(tmp);
cgit_print_error("Failed to open %s: %s", name,
rc ? strerror(rc) : "Not a valid git repository");
cgit_print_docend();
return 1;
}
@ -501,14 +499,14 @@ static int prepare_repo_cmd(struct cgit_context *ctx)
}
if (get_sha1(ctx->qry.head, sha1)) {
tmp = xstrdup(ctx->qry.head);
char *tmp = xstrdup(ctx->qry.head);
ctx->qry.head = ctx->repo->defbranch;
ctx->page.status = 404;
ctx->page.statusmsg = "Not found";
cgit_print_http_headers(ctx);
cgit_print_docstart(ctx);
cgit_print_pageheader(ctx);
cgit_print_error(fmt("Invalid branch: %s", tmp));
cgit_print_error("Invalid branch: %s", tmp);
cgit_print_docend();
return 1;
}
@ -550,7 +548,7 @@ static void process_request(void *cbdata)
cgit_print_http_headers(ctx);
cgit_print_docstart(ctx);
cgit_print_pageheader(ctx);
cgit_print_error(fmt("No repository selected"));
cgit_print_error("No repository selected");
cgit_print_docend();
return;
}
@ -862,7 +860,7 @@ int main(int argc, const char **argv)
err = cache_process(ctx.cfg.cache_size, ctx.cfg.cache_root,
ctx.qry.raw, ttl, process_request, &ctx);
if (err)
cgit_print_error(fmt("Error processing page: %s (%d)",
strerror(err), err));
cgit_print_error("Error processing page: %s (%d)",
strerror(err), err);
return err;
}

8
ui-blob.c
View File

@ -94,12 +94,12 @@ void cgit_print_blob(const char *hex, char *path, const char *head)
if (hex) {
if (get_sha1_hex(hex, sha1)) {
cgit_print_error(fmt("Bad hex value: %s", hex));
cgit_print_error("Bad hex value: %s", hex);
return;
}
} else {
if (get_sha1(head, sha1)) {
cgit_print_error(fmt("Bad ref: %s", head));
cgit_print_error("Bad ref: %s", head);
return;
}
}
@ -113,13 +113,13 @@ void cgit_print_blob(const char *hex, char *path, const char *head)
}
if (type == OBJ_BAD) {
cgit_print_error(fmt("Bad object name: %s", hex));
cgit_print_error("Bad object name: %s", hex);
return;
}
buf = read_sha1_file(sha1, &type, &size);
if (!buf) {
cgit_print_error(fmt("Error reading object %s", hex));
cgit_print_error("Error reading object %s", hex);
return;
}

4
ui-commit.c
View File

@ -27,12 +27,12 @@ void cgit_print_commit(char *hex, const char *prefix)
hex = ctx.qry.head;
if (get_sha1(hex, sha1)) {
cgit_print_error(fmt("Bad object id: %s", hex));
cgit_print_error("Bad object id: %s", hex);
return;
}
commit = lookup_commit_reference(sha1);
if (!commit) {
cgit_print_error(fmt("Bad commit reference: %s", hex));
cgit_print_error("Bad commit reference: %s", hex);
return;
}
info = cgit_parse_commit(commit);

8
ui-diff.c
View File

@ -369,12 +369,12 @@ void cgit_print_diff(const char *new_rev, const char *old_rev,
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));
cgit_print_error("Bad object name: %s", new_rev);
return;
}
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)));
cgit_print_error("Bad commit: %s", sha1_to_hex(new_rev_sha1));
return;
}
@ -388,12 +388,12 @@ void cgit_print_diff(const char *new_rev, const char *old_rev,
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)));
cgit_print_error("Bad object name: %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)));
cgit_print_error("Bad commit: %s", sha1_to_hex(old_rev_sha1));
return;
}
}

4
ui-patch.c
View File

@ -94,12 +94,12 @@ void cgit_print_patch(char *hex, const char *prefix)
hex = ctx.qry.head;
if (get_sha1(hex, sha1)) {
cgit_print_error(fmt("Bad object id: %s", hex));
cgit_print_error("Bad object id: %s", hex);
return;
}
commit = lookup_commit_reference(sha1);
if (!commit) {
cgit_print_error(fmt("Bad commit reference: %s", hex));
cgit_print_error("Bad commit reference: %s", hex);
return;
}
info = cgit_parse_commit(commit);

15
ui-shared.c
View File

@ -28,10 +28,21 @@ static char *http_date(time_t t)
tm->tm_hour, tm->tm_min, tm->tm_sec);
}
void cgit_print_error(const char *msg)
void cgit_print_error(const char *fmt, ...)
{
va_list ap;
va_start(ap, fmt);
cgit_vprint_error(fmt, ap);
va_end(ap);
}
void cgit_vprint_error(const char *fmt, va_list ap)
{
va_list cp;
html("<div class='error'>");
html_txt(msg);
va_copy(cp, ap);
html_vtxtf(fmt, cp);
va_end(cp);
html("</div>\n");
}

5
ui-shared.h
View File

@ -52,7 +52,10 @@ extern void cgit_object_link(struct object *obj);
extern void cgit_submodule_link(const char *class, char *path,
const char *rev);
extern void cgit_print_error(const char *msg);
__attribute__((format (printf,1,2)))
extern void cgit_print_error(const char *fmt, ...);
__attribute__((format (printf,1,0)))
extern void cgit_vprint_error(const char *fmt, va_list ap);
extern void cgit_print_date(time_t secs, const char *format, int local_time);
extern void cgit_print_age(time_t t, time_t max_relative, const char *format);
extern void cgit_print_http_headers(struct cgit_context *ctx);

16
ui-snapshot.c
View File

@ -100,11 +100,11 @@ static int make_snapshot(const struct cgit_snapshot_format *format,
unsigned char sha1[20];
if (get_sha1(hex, sha1)) {
cgit_print_error(fmt("Bad object id: %s", hex));
cgit_print_error("Bad object id: %s", hex);
return 1;
}
if (!lookup_commit_reference(sha1)) {
cgit_print_error(fmt("Not a commit reference: %s", hex));
cgit_print_error("Not a commit reference: %s", hex);
return 1;
}
ctx.page.mimetype = xstrdup(format->mimetype);
@ -154,13 +154,18 @@ static const char *get_ref_from_filename(const char *url, const char *filename,
return NULL;
}
static void show_error(char *msg)
__attribute__((format (printf, 1, 2)))
static void show_error(char *fmt, ...)
{
va_list ap;
ctx.page.mimetype = "text/html";
cgit_print_http_headers(&ctx);
cgit_print_docstart(&ctx);
cgit_print_pageheader(&ctx);
cgit_print_error(msg);
va_start(ap, fmt);
cgit_vprint_error(fmt, ap);
va_end(ap);
cgit_print_docend();
}
@ -177,8 +182,7 @@ void cgit_print_snapshot(const char *head, const char *hex,
f = get_format(filename);
if (!f) {
show_error(xstrdup(fmt("Unsupported snapshot format: %s",
filename)));
show_error("Unsupported snapshot format: %s", filename);
return;
}

5
ui-stats.c
View File

@ -374,12 +374,11 @@ void cgit_show_stats(struct cgit_context *ctx)
i = cgit_find_stats_period(code, &period);
if (!i) {
cgit_print_error(fmt("Unknown statistics type: %c", code[0]));
cgit_print_error("Unknown statistics type: %c", code[0]);
return;
}
if (i > ctx->repo->max_stats) {
cgit_print_error(fmt("Statistics type disabled: %s",
period->name));
cgit_print_error("Statistics type disabled: %s", period->name);
return;
}
authors = collect_stats(ctx, period);

6
ui-tag.c
View File

@ -50,18 +50,18 @@ void cgit_print_tag(char *revname)
revname = ctx.qry.head;
if (get_sha1(fmt("refs/tags/%s", revname), sha1)) {
cgit_print_error(fmt("Bad tag reference: %s", revname));
cgit_print_error("Bad tag reference: %s", revname);
return;
}
obj = parse_object(sha1);
if (!obj) {
cgit_print_error(fmt("Bad object id: %s", sha1_to_hex(sha1)));
cgit_print_error("Bad object id: %s", sha1_to_hex(sha1));
return;
}
if (obj->type == OBJ_TAG) {
tag = lookup_tag(sha1);
if (!tag || parse_tag(tag) || !(info = cgit_parse_tag(tag))) {
cgit_print_error(fmt("Bad tag object: %s", revname));
cgit_print_error("Bad tag object: %s", revname);
return;
}
html("<table class='commit-info'>\n");

13
ui-tree.c
View File

@ -95,15 +95,13 @@ static void print_object(const unsigned char *sha1, char *path, const char *base
type = sha1_object_info(sha1, &size);
if (type == OBJ_BAD) {
cgit_print_error(fmt("Bad object name: %s",
sha1_to_hex(sha1)));
cgit_print_error("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)));
cgit_print_error("Error reading object %s", sha1_to_hex(sha1));
return;
}
@ -209,8 +207,7 @@ static void ls_tree(const unsigned char *sha1, char *path, struct walk_tree_cont
tree = parse_tree_indirect(sha1);
if (!tree) {
cgit_print_error(fmt("Not a tree object: %s",
sha1_to_hex(sha1)));
cgit_print_error("Not a tree object: %s", sha1_to_hex(sha1));
return;
}
@ -273,12 +270,12 @@ void cgit_print_tree(const char *rev, char *path)
rev = ctx.qry.head;
if (get_sha1(rev, sha1)) {
cgit_print_error(fmt("Invalid revision name: %s", rev));
cgit_print_error("Invalid revision name: %s", rev);
return;
}
commit = lookup_commit_reference(sha1);
if (!commit || parse_commit(commit)) {
cgit_print_error(fmt("Invalid commit reference: %s", rev));
cgit_print_error("Invalid commit reference: %s", rev);
return;
}