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-rw-r--r--convert.c296
1 files changed, 185 insertions, 111 deletions
diff --git a/convert.c b/convert.c
index 9a5612e93d..b1614bf7ff 100644
--- a/convert.c
+++ b/convert.c
@@ -13,18 +13,25 @@
* translation when the "text" attribute or "auto_crlf" option is set.
*/
+/* Stat bits: When BIN is set, the txt bits are unset */
+#define CONVERT_STAT_BITS_TXT_LF 0x1
+#define CONVERT_STAT_BITS_TXT_CRLF 0x2
+#define CONVERT_STAT_BITS_BIN 0x4
+
enum crlf_action {
- CRLF_GUESS = -1,
- CRLF_BINARY = 0,
+ CRLF_UNDEFINED,
+ CRLF_BINARY,
CRLF_TEXT,
- CRLF_INPUT,
- CRLF_CRLF,
- CRLF_AUTO
+ CRLF_TEXT_INPUT,
+ CRLF_TEXT_CRLF,
+ CRLF_AUTO,
+ CRLF_AUTO_INPUT,
+ CRLF_AUTO_CRLF
};
struct text_stat {
/* NUL, CR, LF and CRLF counts */
- unsigned nul, cr, lf, crlf;
+ unsigned nul, lonecr, lonelf, crlf;
/* These are just approximations! */
unsigned printable, nonprintable;
@@ -39,13 +46,15 @@ static void gather_stats(const char *buf, unsigned long size, struct text_stat *
for (i = 0; i < size; i++) {
unsigned char c = buf[i];
if (c == '\r') {
- stats->cr++;
- if (i+1 < size && buf[i+1] == '\n')
+ if (i+1 < size && buf[i+1] == '\n') {
stats->crlf++;
+ i++;
+ } else
+ stats->lonecr++;
continue;
}
if (c == '\n') {
- stats->lf++;
+ stats->lonelf++;
continue;
}
if (c == 127)
@@ -75,23 +84,84 @@ static void gather_stats(const char *buf, unsigned long size, struct text_stat *
/*
* The same heuristics as diff.c::mmfile_is_binary()
+ * We treat files with bare CR as binary
*/
-static int is_binary(unsigned long size, struct text_stat *stats)
+static int convert_is_binary(unsigned long size, const struct text_stat *stats)
{
-
+ if (stats->lonecr)
+ return 1;
if (stats->nul)
return 1;
if ((stats->printable >> 7) < stats->nonprintable)
return 1;
- /*
- * Other heuristics? Average line length might be relevant,
- * as might LF vs CR vs CRLF counts..
- *
- * NOTE! It might be normal to have a low ratio of CRLF to LF
- * (somebody starts with a LF-only file and edits it with an editor
- * that adds CRLF only to lines that are added..). But do we
- * want to support CR-only? Probably not.
- */
+ return 0;
+}
+
+static unsigned int gather_convert_stats(const char *data, unsigned long size)
+{
+ struct text_stat stats;
+ int ret = 0;
+ if (!data || !size)
+ return 0;
+ gather_stats(data, size, &stats);
+ if (convert_is_binary(size, &stats))
+ ret |= CONVERT_STAT_BITS_BIN;
+ if (stats.crlf)
+ ret |= CONVERT_STAT_BITS_TXT_CRLF;
+ if (stats.lonelf)
+ ret |= CONVERT_STAT_BITS_TXT_LF;
+
+ return ret;
+}
+
+static const char *gather_convert_stats_ascii(const char *data, unsigned long size)
+{
+ unsigned int convert_stats = gather_convert_stats(data, size);
+
+ if (convert_stats & CONVERT_STAT_BITS_BIN)
+ return "-text";
+ switch (convert_stats) {
+ case CONVERT_STAT_BITS_TXT_LF:
+ return "lf";
+ case CONVERT_STAT_BITS_TXT_CRLF:
+ return "crlf";
+ case CONVERT_STAT_BITS_TXT_LF | CONVERT_STAT_BITS_TXT_CRLF:
+ return "mixed";
+ default:
+ return "none";
+ }
+}
+
+const char *get_cached_convert_stats_ascii(const char *path)
+{
+ const char *ret;
+ unsigned long sz;
+ void *data = read_blob_data_from_cache(path, &sz);
+ ret = gather_convert_stats_ascii(data, sz);
+ free(data);
+ return ret;
+}
+
+const char *get_wt_convert_stats_ascii(const char *path)
+{
+ const char *ret = "";
+ struct strbuf sb = STRBUF_INIT;
+ if (strbuf_read_file(&sb, path, 0) >= 0)
+ ret = gather_convert_stats_ascii(sb.buf, sb.len);
+ strbuf_release(&sb);
+ return ret;
+}
+
+static int text_eol_is_crlf(void)
+{
+ if (auto_crlf == AUTO_CRLF_TRUE)
+ return 1;
+ else if (auto_crlf == AUTO_CRLF_INPUT)
+ return 0;
+ if (core_eol == EOL_CRLF)
+ return 1;
+ if (core_eol == EOL_UNSET && EOL_NATIVE == EOL_CRLF)
+ return 1;
return 0;
}
@@ -100,23 +170,19 @@ static enum eol output_eol(enum crlf_action crlf_action)
switch (crlf_action) {
case CRLF_BINARY:
return EOL_UNSET;
- case CRLF_CRLF:
+ case CRLF_TEXT_CRLF:
return EOL_CRLF;
- case CRLF_INPUT:
+ case CRLF_TEXT_INPUT:
return EOL_LF;
- case CRLF_GUESS:
- if (!auto_crlf)
- return EOL_UNSET;
- /* fall through */
+ case CRLF_UNDEFINED:
+ case CRLF_AUTO_CRLF:
+ case CRLF_AUTO_INPUT:
case CRLF_TEXT:
case CRLF_AUTO:
- if (auto_crlf == AUTO_CRLF_TRUE)
- return EOL_CRLF;
- else if (auto_crlf == AUTO_CRLF_INPUT)
- return EOL_LF;
- else if (core_eol == EOL_UNSET)
- return EOL_NATIVE;
+ /* fall through */
+ return text_eol_is_crlf() ? EOL_CRLF : EOL_LF;
}
+ warning("Illegal crlf_action %d\n", (int)crlf_action);
return core_eol;
}
@@ -142,7 +208,7 @@ static void check_safe_crlf(const char *path, enum crlf_action crlf_action,
* CRLFs would be added by checkout:
* check if we have "naked" LFs
*/
- if (stats->lf != stats->crlf) {
+ if (stats->lonelf) {
if (checksafe == SAFE_CRLF_WARN)
warning("LF will be replaced by CRLF in %s.\nThe file will have its original line endings in your working directory.", path);
else /* i.e. SAFE_CRLF_FAIL */
@@ -173,7 +239,6 @@ static int crlf_to_git(const char *path, const char *src, size_t len,
char *dst;
if (crlf_action == CRLF_BINARY ||
- (crlf_action == CRLF_GUESS && auto_crlf == AUTO_CRLF_FALSE) ||
(src && !len))
return 0;
@@ -186,22 +251,11 @@ static int crlf_to_git(const char *path, const char *src, size_t len,
gather_stats(src, len, &stats);
- if (crlf_action == CRLF_AUTO || crlf_action == CRLF_GUESS) {
- /*
- * We're currently not going to even try to convert stuff
- * that has bare CR characters. Does anybody do that crazy
- * stuff?
- */
- if (stats.cr != stats.crlf)
+ if (crlf_action == CRLF_AUTO || crlf_action == CRLF_AUTO_INPUT || crlf_action == CRLF_AUTO_CRLF) {
+ if (convert_is_binary(len, &stats))
return 0;
- /*
- * And add some heuristics for binary vs text, of course...
- */
- if (is_binary(len, &stats))
- return 0;
-
- if (crlf_action == CRLF_GUESS) {
+ if (crlf_action == CRLF_AUTO_INPUT || crlf_action == CRLF_AUTO_CRLF) {
/*
* If the file in the index has any CR in it, do not convert.
* This is the new safer autocrlf handling.
@@ -213,8 +267,8 @@ static int crlf_to_git(const char *path, const char *src, size_t len,
check_safe_crlf(path, crlf_action, &stats, checksafe);
- /* Optimization: No CR? Nothing to convert, regardless. */
- if (!stats.cr)
+ /* Optimization: No CRLF? Nothing to convert, regardless. */
+ if (!stats.crlf)
return 0;
/*
@@ -228,7 +282,7 @@ static int crlf_to_git(const char *path, const char *src, size_t len,
if (strbuf_avail(buf) + buf->len < len)
strbuf_grow(buf, len - buf->len);
dst = buf->buf;
- if (crlf_action == CRLF_AUTO || crlf_action == CRLF_GUESS) {
+ if (crlf_action == CRLF_AUTO || crlf_action == CRLF_AUTO_INPUT || crlf_action == CRLF_AUTO_CRLF) {
/*
* If we guessed, we already know we rejected a file with
* lone CR, and we can strip a CR without looking at what
@@ -261,27 +315,19 @@ static int crlf_to_worktree(const char *path, const char *src, size_t len,
gather_stats(src, len, &stats);
- /* No LF? Nothing to convert, regardless. */
- if (!stats.lf)
- return 0;
-
- /* Was it already in CRLF format? */
- if (stats.lf == stats.crlf)
+ /* No "naked" LF? Nothing to convert, regardless. */
+ if (!stats.lonelf)
return 0;
- if (crlf_action == CRLF_AUTO || crlf_action == CRLF_GUESS) {
- if (crlf_action == CRLF_GUESS) {
+ if (crlf_action == CRLF_AUTO || crlf_action == CRLF_AUTO_INPUT || crlf_action == CRLF_AUTO_CRLF) {
+ if (crlf_action == CRLF_AUTO_INPUT || crlf_action == CRLF_AUTO_CRLF) {
/* If we have any CR or CRLF line endings, we do not touch it */
/* This is the new safer autocrlf-handling */
- if (stats.cr > 0 || stats.crlf > 0)
+ if (stats.lonecr || stats.crlf )
return 0;
}
- /* If we have any bare CR characters, we're not going to touch it */
- if (stats.cr != stats.crlf)
- return 0;
-
- if (is_binary(len, &stats))
+ if (convert_is_binary(len, &stats))
return 0;
}
@@ -289,7 +335,7 @@ static int crlf_to_worktree(const char *path, const char *src, size_t len,
if (src == buf->buf)
to_free = strbuf_detach(buf, NULL);
- strbuf_grow(buf, len + stats.lf - stats.crlf);
+ strbuf_grow(buf, len + stats.lonelf);
for (;;) {
const char *nl = memchr(src, '\n', len);
if (!nl)
@@ -356,9 +402,14 @@ static int filter_buffer_or_fd(int in, int out, void *data)
sigchain_push(SIGPIPE, SIG_IGN);
if (params->src) {
- write_err = (write_in_full(child_process.in, params->src, params->size) < 0);
+ write_err = (write_in_full(child_process.in,
+ params->src, params->size) < 0);
+ if (errno == EPIPE)
+ write_err = 0;
} else {
write_err = copy_fd(params->fd, child_process.in);
+ if (write_err == COPY_WRITE_ERROR && errno == EPIPE)
+ write_err = 0;
}
if (close(child_process.in))
@@ -390,7 +441,7 @@ static int apply_filter(const char *path, const char *src, size_t len, int fd,
struct async async;
struct filter_params params;
- if (!cmd)
+ if (!cmd || !*cmd)
return 0;
if (!dst)
@@ -652,7 +703,7 @@ static int ident_to_worktree(const char *path, const char *src, size_t len,
return 1;
}
-static enum crlf_action git_path_check_crlf(const char *path, struct git_attr_check *check)
+static enum crlf_action git_path_check_crlf(struct git_attr_check *check)
{
const char *value = check->value;
@@ -663,13 +714,13 @@ static enum crlf_action git_path_check_crlf(const char *path, struct git_attr_ch
else if (ATTR_UNSET(value))
;
else if (!strcmp(value, "input"))
- return CRLF_INPUT;
+ return CRLF_TEXT_INPUT;
else if (!strcmp(value, "auto"))
return CRLF_AUTO;
- return CRLF_GUESS;
+ return CRLF_UNDEFINED;
}
-static enum eol git_path_check_eol(const char *path, struct git_attr_check *check)
+static enum eol git_path_check_eol(struct git_attr_check *check)
{
const char *value = check->value;
@@ -682,8 +733,7 @@ static enum eol git_path_check_eol(const char *path, struct git_attr_check *chec
return EOL_UNSET;
}
-static struct convert_driver *git_path_check_convert(const char *path,
- struct git_attr_check *check)
+static struct convert_driver *git_path_check_convert(struct git_attr_check *check)
{
const char *value = check->value;
struct convert_driver *drv;
@@ -696,28 +746,17 @@ static struct convert_driver *git_path_check_convert(const char *path,
return NULL;
}
-static int git_path_check_ident(const char *path, struct git_attr_check *check)
+static int git_path_check_ident(struct git_attr_check *check)
{
const char *value = check->value;
return !!ATTR_TRUE(value);
}
-static enum crlf_action input_crlf_action(enum crlf_action text_attr, enum eol eol_attr)
-{
- if (text_attr == CRLF_BINARY)
- return CRLF_BINARY;
- if (eol_attr == EOL_LF)
- return CRLF_INPUT;
- if (eol_attr == EOL_CRLF)
- return CRLF_CRLF;
- return text_attr;
-}
-
struct conv_attrs {
struct convert_driver *drv;
- enum crlf_action crlf_action;
- enum eol eol_attr;
+ enum crlf_action attr_action; /* What attr says */
+ enum crlf_action crlf_action; /* When no attr is set, use core.autocrlf */
int ident;
};
@@ -739,18 +778,33 @@ static void convert_attrs(struct conv_attrs *ca, const char *path)
}
if (!git_check_attr(path, NUM_CONV_ATTRS, ccheck)) {
- ca->crlf_action = git_path_check_crlf(path, ccheck + 4);
- if (ca->crlf_action == CRLF_GUESS)
- ca->crlf_action = git_path_check_crlf(path, ccheck + 0);
- ca->ident = git_path_check_ident(path, ccheck + 1);
- ca->drv = git_path_check_convert(path, ccheck + 2);
- ca->eol_attr = git_path_check_eol(path, ccheck + 3);
+ ca->crlf_action = git_path_check_crlf(ccheck + 4);
+ if (ca->crlf_action == CRLF_UNDEFINED)
+ ca->crlf_action = git_path_check_crlf(ccheck + 0);
+ ca->attr_action = ca->crlf_action;
+ ca->ident = git_path_check_ident(ccheck + 1);
+ ca->drv = git_path_check_convert(ccheck + 2);
+ if (ca->crlf_action != CRLF_BINARY) {
+ enum eol eol_attr = git_path_check_eol(ccheck + 3);
+ if (eol_attr == EOL_LF)
+ ca->crlf_action = CRLF_TEXT_INPUT;
+ else if (eol_attr == EOL_CRLF)
+ ca->crlf_action = CRLF_TEXT_CRLF;
+ }
+ ca->attr_action = ca->crlf_action;
} else {
ca->drv = NULL;
- ca->crlf_action = CRLF_GUESS;
- ca->eol_attr = EOL_UNSET;
+ ca->crlf_action = CRLF_UNDEFINED;
ca->ident = 0;
}
+ if (ca->crlf_action == CRLF_TEXT)
+ ca->crlf_action = text_eol_is_crlf() ? CRLF_TEXT_CRLF : CRLF_TEXT_INPUT;
+ if (ca->crlf_action == CRLF_UNDEFINED && auto_crlf == AUTO_CRLF_FALSE)
+ ca->crlf_action = CRLF_BINARY;
+ if (ca->crlf_action == CRLF_UNDEFINED && auto_crlf == AUTO_CRLF_TRUE)
+ ca->crlf_action = CRLF_AUTO_CRLF;
+ if (ca->crlf_action == CRLF_UNDEFINED && auto_crlf == AUTO_CRLF_INPUT)
+ ca->crlf_action = CRLF_AUTO_INPUT;
}
int would_convert_to_git_filter_fd(const char *path)
@@ -772,6 +826,32 @@ int would_convert_to_git_filter_fd(const char *path)
return apply_filter(path, NULL, 0, -1, NULL, ca.drv->clean);
}
+const char *get_convert_attr_ascii(const char *path)
+{
+ struct conv_attrs ca;
+
+ convert_attrs(&ca, path);
+ switch (ca.attr_action) {
+ case CRLF_UNDEFINED:
+ return "";
+ case CRLF_BINARY:
+ return "-text";
+ case CRLF_TEXT:
+ return "text";
+ case CRLF_TEXT_INPUT:
+ return "text eol=lf";
+ case CRLF_TEXT_CRLF:
+ return "text eol=crlf";
+ case CRLF_AUTO:
+ return "text=auto";
+ case CRLF_AUTO_CRLF:
+ return "text=auto eol=crlf"; /* This is not supported yet */
+ case CRLF_AUTO_INPUT:
+ return "text=auto eol=lf"; /* This is not supported yet */
+ }
+ return "";
+}
+
int convert_to_git(const char *path, const char *src, size_t len,
struct strbuf *dst, enum safe_crlf checksafe)
{
@@ -794,7 +874,6 @@ int convert_to_git(const char *path, const char *src, size_t len,
src = dst->buf;
len = dst->len;
}
- ca.crlf_action = input_crlf_action(ca.crlf_action, ca.eol_attr);
ret |= crlf_to_git(path, src, len, dst, ca.crlf_action, checksafe);
if (ret && dst) {
src = dst->buf;
@@ -815,7 +894,6 @@ void convert_to_git_filter_fd(const char *path, int fd, struct strbuf *dst,
if (!apply_filter(path, NULL, 0, fd, dst, ca.drv->clean))
die("%s: clean filter '%s' failed", path, ca.drv->name);
- ca.crlf_action = input_crlf_action(ca.crlf_action, ca.eol_attr);
crlf_to_git(path, dst->buf, dst->len, dst, ca.crlf_action, checksafe);
ident_to_git(path, dst->buf, dst->len, dst, ca.ident);
}
@@ -845,7 +923,6 @@ static int convert_to_working_tree_internal(const char *path, const char *src,
* is a smudge filter. The filter might expect CRLFs.
*/
if (filter || !normalizing) {
- ca.crlf_action = input_crlf_action(ca.crlf_action, ca.eol_attr);
ret |= crlf_to_worktree(path, src, len, dst, ca.crlf_action);
if (ret) {
src = dst->buf;
@@ -1284,7 +1361,8 @@ static struct stream_filter *ident_filter(const unsigned char *sha1)
{
struct ident_filter *ident = xmalloc(sizeof(*ident));
- sprintf(ident->ident, ": %s $", sha1_to_hex(sha1));
+ xsnprintf(ident->ident, sizeof(ident->ident),
+ ": %s $", sha1_to_hex(sha1));
strbuf_init(&ident->left, 0);
ident->filter.vtbl = &ident_vtbl;
ident->state = 0;
@@ -1302,26 +1380,22 @@ static struct stream_filter *ident_filter(const unsigned char *sha1)
struct stream_filter *get_stream_filter(const char *path, const unsigned char *sha1)
{
struct conv_attrs ca;
- enum crlf_action crlf_action;
struct stream_filter *filter = NULL;
convert_attrs(&ca, path);
-
if (ca.drv && (ca.drv->smudge || ca.drv->clean))
- return filter;
+ return NULL;
+
+ if (ca.crlf_action == CRLF_AUTO || ca.crlf_action == CRLF_AUTO_CRLF)
+ return NULL;
if (ca.ident)
filter = ident_filter(sha1);
- crlf_action = input_crlf_action(ca.crlf_action, ca.eol_attr);
-
- if ((crlf_action == CRLF_BINARY) || (crlf_action == CRLF_INPUT) ||
- (crlf_action == CRLF_GUESS && auto_crlf == AUTO_CRLF_FALSE))
- filter = cascade_filter(filter, &null_filter_singleton);
-
- else if (output_eol(crlf_action) == EOL_CRLF &&
- !(crlf_action == CRLF_AUTO || crlf_action == CRLF_GUESS))
+ if (output_eol(ca.crlf_action) == EOL_CRLF)
filter = cascade_filter(filter, lf_to_crlf_filter());
+ else
+ filter = cascade_filter(filter, &null_filter_singleton);
return filter;
}
generated by cgit v1.2.3 (git 2.25.1) at 2024-12-19 20:37:02 +0000