#include "cache.h"
#include "attr.h"
#include "run-command.h"
-#include "strbuf.h"
/*
* convert.c - convert a file when checking it out and checking it in.
#define CRLF_INPUT 2
struct text_stat {
- /* CR, LF and CRLF counts */
- unsigned cr, lf, crlf;
+ /* NUL, CR, LF and CRLF counts */
+ unsigned nul, cr, lf, crlf;
/* These are just approximations! */
unsigned printable, nonprintable;
case '\b': case '\t': case '\033': case '\014':
stats->printable++;
break;
+ case 0:
+ stats->nul++;
+ /* fall through */
default:
stats->nonprintable++;
}
static int is_binary(unsigned long size, struct text_stat *stats)
{
+ if (stats->nul)
+ return 1;
if ((stats->printable >> 7) < stats->nonprintable)
return 1;
/*
return 0;
}
+static void check_safe_crlf(const char *path, int action,
+ struct text_stat *stats, enum safe_crlf checksafe)
+{
+ if (!checksafe)
+ return;
+
+ if (action == CRLF_INPUT || auto_crlf <= 0) {
+ /*
+ * CRLFs would not be restored by checkout:
+ * check if we'd remove CRLFs
+ */
+ if (stats->crlf) {
+ if (checksafe == SAFE_CRLF_WARN)
+ warning("CRLF will be replaced by LF in %s.", path);
+ else /* i.e. SAFE_CRLF_FAIL */
+ die("CRLF would be replaced by LF in %s.", path);
+ }
+ } else if (auto_crlf > 0) {
+ /*
+ * CRLFs would be added by checkout:
+ * check if we have "naked" LFs
+ */
+ if (stats->lf != stats->crlf) {
+ if (checksafe == SAFE_CRLF_WARN)
+ warning("LF will be replaced by CRLF in %s", path);
+ else /* i.e. SAFE_CRLF_FAIL */
+ die("LF would be replaced by CRLF in %s", path);
+ }
+ }
+}
+
static int crlf_to_git(const char *path, const char *src, size_t len,
- struct strbuf *buf, int action)
+ struct strbuf *buf, int action, enum safe_crlf checksafe)
{
struct text_stat stats;
char *dst;
return 0;
gather_stats(src, len, &stats);
- /* No CR? Nothing to convert, regardless. */
- if (!stats.cr)
- return 0;
if (action == CRLF_GUESS) {
/*
return 0;
}
- strbuf_grow(buf, len);
+ check_safe_crlf(path, action, &stats, checksafe);
+
+ /* Optimization: No CR? Nothing to convert, regardless. */
+ if (!stats.cr)
+ return 0;
+
+ /* only grow if not in place */
+ if (strbuf_avail(buf) + buf->len < len)
+ strbuf_grow(buf, len - buf->len);
dst = buf->buf;
if (action == CRLF_GUESS) {
/*
/* are we "faking" in place editing ? */
if (src == buf->buf)
- to_free = strbuf_detach(buf);
+ to_free = strbuf_detach(buf, NULL);
strbuf_grow(buf, len + stats.lf - stats.crlf);
for (;;) {
return 1;
}
-static int filter_buffer(const char *path, const char *src,
- unsigned long size, const char *cmd)
+struct filter_params {
+ const char *src;
+ unsigned long size;
+ const char *cmd;
+};
+
+static int filter_buffer(int fd, void *data)
{
/*
* Spawn cmd and feed the buffer contents through its stdin.
*/
struct child_process child_process;
- int pipe_feed[2];
+ struct filter_params *params = (struct filter_params *)data;
int write_err, status;
+ const char *argv[] = { "sh", "-c", params->cmd, NULL };
memset(&child_process, 0, sizeof(child_process));
+ child_process.argv = argv;
+ child_process.in = -1;
+ child_process.out = fd;
- if (pipe(pipe_feed) < 0) {
- error("cannot create pipe to run external filter %s", cmd);
- return 1;
- }
-
- child_process.pid = fork();
- if (child_process.pid < 0) {
- error("cannot fork to run external filter %s", cmd);
- close(pipe_feed[0]);
- close(pipe_feed[1]);
- return 1;
- }
- if (!child_process.pid) {
- dup2(pipe_feed[0], 0);
- close(pipe_feed[0]);
- close(pipe_feed[1]);
- execlp("sh", "sh", "-c", cmd, NULL);
- return 1;
- }
- close(pipe_feed[0]);
+ if (start_command(&child_process))
+ return error("cannot fork to run external filter %s", params->cmd);
- write_err = (write_in_full(pipe_feed[1], src, size) < 0);
- if (close(pipe_feed[1]))
+ write_err = (write_in_full(child_process.in, params->src, params->size) < 0);
+ if (close(child_process.in))
write_err = 1;
if (write_err)
- error("cannot feed the input to external filter %s", cmd);
+ error("cannot feed the input to external filter %s", params->cmd);
status = finish_command(&child_process);
if (status)
- error("external filter %s failed %d", cmd, -status);
+ error("external filter %s failed %d", params->cmd, -status);
return (write_err || status);
}
*
* (child --> cmd) --> us
*/
- int pipe_feed[2];
- int status, ret = 1;
- struct child_process child_process;
+ int ret = 1;
struct strbuf nbuf;
+ struct async async;
+ struct filter_params params;
if (!cmd)
return 0;
- memset(&child_process, 0, sizeof(child_process));
-
- if (pipe(pipe_feed) < 0) {
- error("cannot create pipe to run external filter %s", cmd);
- return 0;
- }
+ memset(&async, 0, sizeof(async));
+ async.proc = filter_buffer;
+ async.data = ¶ms;
+ params.src = src;
+ params.size = len;
+ params.cmd = cmd;
fflush(NULL);
- child_process.pid = fork();
- if (child_process.pid < 0) {
- error("cannot fork to run external filter %s", cmd);
- close(pipe_feed[0]);
- close(pipe_feed[1]);
- return 0;
- }
- if (!child_process.pid) {
- dup2(pipe_feed[1], 1);
- close(pipe_feed[0]);
- close(pipe_feed[1]);
- exit(filter_buffer(path, src, len, cmd));
- }
- close(pipe_feed[1]);
+ if (start_async(&async))
+ return 0; /* error was already reported */
strbuf_init(&nbuf, 0);
- if (strbuf_read(&nbuf, pipe_feed[0], len) < 0) {
+ if (strbuf_read(&nbuf, async.out, len) < 0) {
error("read from external filter %s failed", cmd);
ret = 0;
}
- if (close(pipe_feed[0])) {
- ret = error("read from external filter %s failed", cmd);
+ if (close(async.out)) {
+ error("read from external filter %s failed", cmd);
ret = 0;
}
- status = finish_command(&child_process);
- if (status) {
- ret = error("external filter %s failed %d", cmd, -status);
+ if (finish_async(&async)) {
+ error("external filter %s failed", cmd);
ret = 0;
}
if (ret) {
- *dst = nbuf;
- } else {
- strbuf_release(&nbuf);
+ strbuf_swap(dst, &nbuf);
}
+ strbuf_release(&nbuf);
return ret;
}
if (!strncmp(drv->name, name, namelen) && !drv->name[namelen])
break;
if (!drv) {
- char *namebuf;
drv = xcalloc(1, sizeof(struct convert_driver));
- namebuf = xmalloc(namelen + 1);
- memcpy(namebuf, name, namelen);
- namebuf[namelen] = 0;
- drv->name = namebuf;
- drv->next = NULL;
+ drv->name = xmemdupz(name, namelen);
*user_convert_tail = drv;
user_convert_tail = &(drv->next);
}
if (!strcmp("smudge", ep)) {
if (!value)
- return error("%s: lacks value", var);
+ return config_error_nonbool(var);
drv->smudge = strdup(value);
return 0;
}
if (!strcmp("clean", ep)) {
if (!value)
- return error("%s: lacks value", var);
+ return config_error_nonbool(var);
drv->clean = strdup(value);
return 0;
}
if (!ident || !count_ident(src, len))
return 0;
- strbuf_grow(buf, len);
+ /* only grow if not in place */
+ if (strbuf_avail(buf) + buf->len < len)
+ strbuf_grow(buf, len - buf->len);
dst = buf->buf;
for (;;) {
dollar = memchr(src, '$', len);
/* are we "faking" in place editing ? */
if (src == buf->buf)
- to_free = strbuf_detach(buf);
+ to_free = strbuf_detach(buf, NULL);
hash_sha1_file(src, len, "blob", sha1);
strbuf_grow(buf, len + cnt * 43);
return !!ATTR_TRUE(value);
}
-int convert_to_git(const char *path, const char *src, size_t len, struct strbuf *dst)
+int convert_to_git(const char *path, const char *src, size_t len,
+ struct strbuf *dst, enum safe_crlf checksafe)
{
struct git_attr_check check[3];
int crlf = CRLF_GUESS;
src = dst->buf;
len = dst->len;
}
- ret |= crlf_to_git(path, src, len, dst, crlf);
+ ret |= crlf_to_git(path, src, len, dst, crlf, checksafe);
if (ret) {
src = dst->buf;
len = dst->len;