fix errors in printf-style format strings

There were many places where the arguments to a printf-like function did
not match the format string.  Mostly, these were a missing 'l' flag, but
there were three exceptions:

- In ui-stats.c, a size_t argument must be printed.  C99 has the "%zu"
  flag for this purpose, but not all compilers support this.  Therefore,
  we mimic what git does - use a NO_C99_FORMAT Makefile variable.

- In ui-stats.c, cgit_print_error() was called with a pointer instead of
  a character.

- In ui-log.c, the "columns" argument was never used.

Signed-off-by: Mark Lodato <lodatom@gmail.com>

6 files changed, 25 insertions, 12 deletions

diff --git a/Makefile b/Makefile
index 2a15469..6c9d118 100644
--- a/Makefile
+++ b/Makefile
@@ -7,24 +7,29 @@ CACHE_ROOT = /var/cache/cgit
 SHA1_HEADER = <openssl/sha.h>
 GIT_VER = 1.7.2.2
 GIT_URL = http://www.kernel.org/pub/software/scm/git/git-$(GIT_VER).tar.bz2
 INSTALL = install
 
 # Define NO_STRCASESTR if you don't have strcasestr.
 #
 # Define NO_OPENSSL to disable linking with OpenSSL and use bundled SHA1
 # implementation (slower).
 #
 # Define NEEDS_LIBICONV if linking with libc is not enough (eg. Darwin).
 #
+# Define NO_C99_FORMAT if your formatted IO functions (printf/scanf et.al.)
+# do not support the 'size specifiers' introduced by C99, namely ll, hh,
+# j, z, t. (representing long long int, char, intmax_t, size_t, ptrdiff_t).
+# some C compilers supported these specifiers prior to C99 as an extension.
+#
 
 #-include config.mak
 
 #
 # Platform specific tweaks
 #
 
 uname_S := $(shell sh -c 'uname -s 2>/dev/null || echo not')
 uname_O := $(shell sh -c 'uname -o 2>/dev/null || echo not')
 uname_R := $(shell sh -c 'uname -r 2>/dev/null || echo not')
 
 ifeq ($(uname_O),Cygwin)
@@ -118,24 +123,27 @@ CFLAGS += -g -Wall -Igit
 CFLAGS += -DSHA1_HEADER='$(SHA1_HEADER)'
 CFLAGS += -DCGIT_VERSION='"$(CGIT_VERSION)"'
 CFLAGS += -DCGIT_CONFIG='"$(CGIT_CONFIG)"'
 CFLAGS += -DCGIT_SCRIPT_NAME='"$(CGIT_SCRIPT_NAME)"'
 CFLAGS += -DCGIT_CACHE_ROOT='"$(CACHE_ROOT)"'
 
 ifdef NO_ICONV
         CFLAGS += -DNO_ICONV
 endif
 ifdef NO_STRCASESTR
         CFLAGS += -DNO_STRCASESTR
 endif
+ifdef NO_C99_FORMAT
+        CFLAGS += -DNO_C99_FORMAT
+endif
 ifdef NO_OPENSSL
         CFLAGS += -DNO_OPENSSL
         GIT_OPTIONS += NO_OPENSSL=1
 else
         EXTLIBS += -lcrypto
 endif
 
 cgit: $(OBJECTS) libgit
         $(QUIET_CC)$(CC) $(CFLAGS) $(LDFLAGS) -o cgit $(OBJECTS) $(EXTLIBS)
 
 cgit.o: VERSION
 
diff --git a/cgit.c b/cgit.c
index d6146e2..3b3f8d9 100644
--- a/cgit.c
+++ b/cgit.c
@@ -601,25 +601,25 @@ static int generate_cached_repolist(const char *path, const char *cached_rc)
 }
 
 static void process_cached_repolist(const char *path)
 {
         struct stat st;
         char *cached_rc;
         time_t age;
         unsigned long hash;
 
         hash = hash_str(path);
         if (ctx.cfg.project_list)
                 hash += hash_str(ctx.cfg.project_list);
-        cached_rc = xstrdup(fmt("%s/rc-%8x", ctx.cfg.cache_root, hash));
+        cached_rc = xstrdup(fmt("%s/rc-%8lx", ctx.cfg.cache_root, hash));
 
         if (stat(cached_rc, &st)) {
                 /* Nothing is cached, we need to scan without forking. And
                  * if we fail to generate a cached repolist, we need to
                  * invoke scan_tree manually.
                  */
                 if (generate_cached_repolist(path, cached_rc)) {
                         if (ctx.cfg.project_list)
                                 scan_projects(path, ctx.cfg.project_list,
                                               repo_config);
                         else
                                 scan_tree(path, repo_config);
diff --git a/ui-diff.c b/ui-diff.c
index 0dcabe9..7ff7e46 100644
--- a/ui-diff.c
+++ b/ui-diff.c
@@ -83,25 +83,25 @@ static void print_fileinfo(struct fileinfo *info)
                 cgit_print_filemode(info->old_mode);
                 html("]</span>");
         }
         htmlf("</td><td class='%s'>", class);
         cgit_diff_link(info->new_path, NULL, NULL, ctx.qry.head, ctx.qry.sha1,
                        ctx.qry.sha2, info->new_path, 0);
         if (info->status == DIFF_STATUS_COPIED || info->status == DIFF_STATUS_RENAMED)
                 htmlf(" (%s from %s)",
                       info->status == DIFF_STATUS_COPIED ? "copied" : "renamed",
                       info->old_path);
         html("</td><td class='right'>");
         if (info->binary) {
-                htmlf("bin</td><td class='graph'>%d -> %d bytes",
+                htmlf("bin</td><td class='graph'>%ld -> %ld bytes",
                       info->old_size, info->new_size);
                 return;
         }
         htmlf("%d", info->added + info->removed);
         html("</td><td class='graph'>");
         htmlf("<table summary='file diffstat' width='%d%%'><tr>", (max_changes > 100 ? 100 : max_changes));
         htmlf("<td class='add' style='width: %.1f%%;'/>",
               info->added * 100.0 / max_changes);
         htmlf("<td class='rem' style='width: %.1f%%;'/>",
               info->removed * 100.0 / max_changes);
         htmlf("<td class='none' style='width: %.1f%%;'/>",
               (max_changes - info->removed - info->added) * 100.0 / max_changes);
diff --git a/ui-log.c b/ui-log.c
index 0536b23..41b5225 100644
--- a/ui-log.c
+++ b/ui-log.c
@@ -219,26 +219,25 @@ void cgit_print_log(const char *tip, int ofs, int cnt, char *grep, char *pattern
                 free_commit_list(commit->parents);
                 commit->parents = NULL;
         }
 
         for (i = 0; i < cnt && (commit = get_revision(&rev)) != NULL; i++) {
                 print_commit(commit);
                 free(commit->buffer);
                 commit->buffer = NULL;
                 free_commit_list(commit->parents);
                 commit->parents = NULL;
         }
         if (pager) {
-                htmlf("</table><div class='pager'>",
-                     columns);
+                html("</table><div class='pager'>");
                 if (ofs > 0) {
                         cgit_log_link("[prev]", NULL, NULL, ctx.qry.head,
                                       ctx.qry.sha1, ctx.qry.vpath,
                                       ofs - cnt, ctx.qry.grep,
                                       ctx.qry.search, ctx.qry.showmsg);
                         html("&nbsp;");
                 }
                 if ((commit = get_revision(&rev)) != NULL) {
                         cgit_log_link("[next]", NULL, NULL, ctx.qry.head,
                                       ctx.qry.sha1, ctx.qry.vpath,
                                       ofs + cnt, ctx.qry.grep,
                                       ctx.qry.search, ctx.qry.showmsg);
diff --git a/ui-stats.c b/ui-stats.c
index 50c2540..946a6ea 100644
--- a/ui-stats.c
+++ b/ui-stats.c
@@ -1,19 +1,25 @@
 #include <string-list.h>
 
 #include "cgit.h"
 #include "html.h"
 #include "ui-shared.h"
 #include "ui-stats.h"
 
+#ifdef NO_C99_FORMAT
+#define SZ_FMT "%u"
+#else
+#define SZ_FMT "%zu"
+#endif
+
 #define MONTHS 6
 
 struct authorstat {
         long total;
         struct string_list list;
 };
 
 #define DAY_SECS (60 * 60 * 24)
 #define WEEK_SECS (DAY_SECS * 7)
 
 static void trunc_week(struct tm *tm)
 {
@@ -274,28 +280,28 @@ void print_combined_authorrow(struct string_list *authors, int from, int to,
         for (j = 0; j < period->count; j++) {
                 tmp = period->pretty(tm);
                 period->inc(tm);
                 subtotal = 0;
                 for (i = from; i <= to; i++) {
                         author = &authors->items[i];
                         authorstat = author->util;
                         items = &authorstat->list;
                         date = string_list_lookup(items, tmp);
                         if (date)
                                 subtotal += (size_t)date->util;
                 }
-                htmlf("<td class='%s'>%d</td>", centerclass, subtotal);
+                htmlf("<td class='%s'>%ld</td>", centerclass, subtotal);
                 total += subtotal;
         }
-        htmlf("<td class='%s'>%d</td></tr>", rightclass, total);
+        htmlf("<td class='%s'>%ld</td></tr>", rightclass, total);
 }
 
 void print_authors(struct string_list *authors, int top,
                    struct cgit_period *period)
 {
         struct string_list_item *author;
         struct authorstat *authorstat;
         struct string_list *items;
         struct string_list_item *date;
         time_t now;
         long i, j, total;
         struct tm *tm;
@@ -326,57 +332,57 @@ void print_authors(struct string_list *authors, int top,
                 authorstat = author->util;
                 items = &authorstat->list;
                 total = 0;
                 for (j = 0; j < period->count; j++)
                         period->dec(tm);
                 for (j = 0; j < period->count; j++) {
                         tmp = period->pretty(tm);
                         period->inc(tm);
                         date = string_list_lookup(items, tmp);
                         if (!date)
                                 html("<td>0</td>");
                         else {
-                                htmlf("<td>%d</td>", date->util);
+                                htmlf("<td>"SZ_FMT"</td>", (size_t)date->util);
                                 total += (size_t)date->util;
                         }
                 }
-                htmlf("<td class='sum'>%d</td></tr>", total);
+                htmlf("<td class='sum'>%ld</td></tr>", total);
         }
 
         if (top < authors->nr)
                 print_combined_authorrow(authors, top, authors->nr - 1,
-                        "Others (%d)", "left", "", "sum", period);
+                        "Others (%ld)", "left", "", "sum", period);
 
         print_combined_authorrow(authors, 0, authors->nr - 1, "Total",
                 "total", "sum", "sum", period);
         html("</table>");
 }
 
 /* Create a sorted string_list with one entry per author. The util-field
  * for each author is another string_list which is used to calculate the
  * number of commits per time-interval.
  */
 void cgit_show_stats(struct cgit_context *ctx)
 {
         struct string_list authors;
         struct cgit_period *period;
         int top, i;
         const char *code = "w";
 
         if (ctx->qry.period)
                 code = ctx->qry.period;
 
         i = cgit_find_stats_period(code, &period);
         if (!i) {
-                cgit_print_error(fmt("Unknown statistics type: %c", code));
+                cgit_print_error(fmt("Unknown statistics type: %c", code[0]));
                 return;
         }
         if (i > ctx->repo->max_stats) {
                 cgit_print_error(fmt("Statistics type disabled: %s",
                                      period->name));
                 return;
         }
         authors = collect_stats(ctx, period);
         qsort(authors.items, authors.nr, sizeof(struct string_list_item),
                 cmp_total_commits);
 
         top = ctx->qry.ofs;
diff --git a/ui-tree.c b/ui-tree.c
index 75ec9cb..0cdbf6d 100644
--- a/ui-tree.c
+++ b/ui-tree.c
@@ -58,25 +58,25 @@ static void print_text_buffer(const char *name, char *buf, unsigned long size)
 }
 
 #define ROWLEN 32
 
 static void print_binary_buffer(char *buf, unsigned long size)
 {
         unsigned long ofs, idx;
         static char ascii[ROWLEN + 1];
 
         html("<table summary='blob content' class='bin-blob'>\n");
         html("<tr><th>ofs</th><th>hex dump</th><th>ascii</th></tr>");
         for (ofs = 0; ofs < size; ofs += ROWLEN, buf += ROWLEN) {
-                htmlf("<tr><td class='right'>%04x</td><td class='hex'>", ofs);
+                htmlf("<tr><td class='right'>%04lx</td><td class='hex'>", ofs);
                 for (idx = 0; idx < ROWLEN && ofs + idx < size; idx++)
                         htmlf("%*s%02x",
                               idx == 16 ? 4 : 1, "",
                               buf[idx] & 0xff);
                 html(" </td><td class='hex'>");
                 for (idx = 0; idx < ROWLEN && ofs + idx < size; idx++)
                         ascii[idx] = isgraph(buf[idx]) ? buf[idx] : '.';
                 ascii[idx] = '\0';
                 html_txt(ascii);
                 html("</td></tr>\n");
         }
         html("</table>\n");
@@ -99,25 +99,25 @@ static void print_object(const unsigned char *sha1, char *path, const char *base
         if (!buf) {
                 cgit_print_error(fmt("Error reading object %s",
                                      sha1_to_hex(sha1)));
                 return;
         }
 
         htmlf("blob: %s (", sha1_to_hex(sha1));
         cgit_plain_link("plain", NULL, NULL, ctx.qry.head,
                         curr_rev, path);
         html(")\n");
 
         if (ctx.cfg.max_blob_size && size / 1024 > ctx.cfg.max_blob_size) {
-                htmlf("<div class='error'>blob size (%dKB) exceeds display size limit (%dKB).</div>",
+                htmlf("<div class='error'>blob size (%ldKB) exceeds display size limit (%dKB).</div>",
                                 size / 1024, ctx.cfg.max_blob_size);
                 return;
         }
 
         if (buffer_is_binary(buf, size))
                 print_binary_buffer(buf, size);
         else
                 print_text_buffer(basename, buf, size);
 }
 
 
 static int ls_item(const unsigned char *sha1, const char *base, int baselen,