size_t len;
unsigned hash : 24;
unsigned flag : 8;
+#define LINE_COMMON 1
};
/*
char *buf;
size_t len;
size_t nr;
+ size_t alloc;
struct line *line_allocated;
struct line *line;
};
return h;
}
+static void add_line_info(struct image *img, const char *bol, size_t len, unsigned flag)
+{
+ ALLOC_GROW(img->line_allocated, img->nr + 1, img->alloc);
+ img->line_allocated[img->nr].len = len;
+ img->line_allocated[img->nr].hash = hash_line(bol, len);
+ img->line_allocated[img->nr].flag = flag;
+ img->nr++;
+}
+
static void prepare_image(struct image *image, char *buf, size_t len,
int prepare_linetable)
{
const char *cp, *ep;
- int n;
+ memset(image, 0, sizeof(*image));
image->buf = buf;
image->len = len;
- if (!prepare_linetable) {
- image->line = NULL;
- image->line_allocated = NULL;
- image->nr = 0;
+ if (!prepare_linetable)
return;
- }
ep = image->buf + image->len;
-
- /* First count lines */
- cp = image->buf;
- n = 0;
- while (cp < ep) {
- cp = strchrnul(cp, '\n');
- n++;
- cp++;
- }
-
- image->line_allocated = xcalloc(n, sizeof(struct line));
- image->line = image->line_allocated;
- image->nr = n;
cp = image->buf;
- n = 0;
while (cp < ep) {
const char *next;
for (next = cp; next < ep && *next != '\n'; next++)
;
if (next < ep)
next++;
- image->line[n].len = next - cp;
- image->line[n].hash = hash_line(cp, next - cp);
+ add_line_info(image, cp, next - cp, 0);
cp = next;
- n++;
}
+ image->line = image->line_allocated;
}
static void clear_image(struct image *image)
case S_IFREG:
if (strbuf_read_file(buf, path, st->st_size) != st->st_size)
return error("unable to open or read %s", path);
- convert_to_git(path, buf->buf, buf->len, buf);
+ convert_to_git(path, buf->buf, buf->len, buf, 0);
return 0;
default:
return -1;
}
}
+static void update_pre_post_images(struct image *preimage,
+ struct image *postimage,
+ char *buf,
+ size_t len)
+{
+ int i, ctx;
+ char *new, *old, *fixed;
+ struct image fixed_preimage;
+
+ /*
+ * Update the preimage with whitespace fixes. Note that we
+ * are not losing preimage->buf -- apply_one_fragment() will
+ * free "oldlines".
+ */
+ prepare_image(&fixed_preimage, buf, len, 1);
+ assert(fixed_preimage.nr == preimage->nr);
+ for (i = 0; i < preimage->nr; i++)
+ fixed_preimage.line[i].flag = preimage->line[i].flag;
+ free(preimage->line_allocated);
+ *preimage = fixed_preimage;
+
+ /*
+ * Adjust the common context lines in postimage, in place.
+ * This is possible because whitespace fixing does not make
+ * the string grow.
+ */
+ new = old = postimage->buf;
+ fixed = preimage->buf;
+ for (i = ctx = 0; i < postimage->nr; i++) {
+ size_t len = postimage->line[i].len;
+ if (!(postimage->line[i].flag & LINE_COMMON)) {
+ /* an added line -- no counterparts in preimage */
+ memmove(new, old, len);
+ old += len;
+ new += len;
+ continue;
+ }
+
+ /* a common context -- skip it in the original postimage */
+ old += len;
+
+ /* and find the corresponding one in the fixed preimage */
+ while (ctx < preimage->nr &&
+ !(preimage->line[ctx].flag & LINE_COMMON)) {
+ fixed += preimage->line[ctx].len;
+ ctx++;
+ }
+ if (preimage->nr <= ctx)
+ die("oops");
+
+ /* and copy it in, while fixing the line length */
+ len = preimage->line[ctx].len;
+ memcpy(new, fixed, len);
+ new += len;
+ fixed += len;
+ postimage->line[i].len = len;
+ ctx++;
+ }
+
+ /* Fix the length of the whole thing */
+ postimage->len = new - postimage->buf;
+}
+
static int match_fragment(struct image *img,
struct image *preimage,
struct image *postimage,
unsigned long try,
int try_lno,
+ unsigned ws_rule,
int match_beginning, int match_end)
{
int i;
+ char *fixed_buf, *buf, *orig, *target;
if (preimage->nr + try_lno > img->nr)
return 0;
!memcmp(img->buf + try, preimage->buf, preimage->len))
return 1;
+ if (ws_error_action != correct_ws_error)
+ return 0;
+
+ /*
+ * The hunk does not apply byte-by-byte, but the hash says
+ * it might with whitespace fuzz.
+ */
+ fixed_buf = xmalloc(preimage->len + 1);
+ buf = fixed_buf;
+ orig = preimage->buf;
+ target = img->buf + try;
+ for (i = 0; i < preimage->nr; i++) {
+ size_t fixlen; /* length after fixing the preimage */
+ size_t oldlen = preimage->line[i].len;
+ size_t tgtlen = img->line[try_lno + i].len;
+ size_t tgtfixlen; /* length after fixing the target line */
+ char tgtfixbuf[1024], *tgtfix;
+ int match;
+
+ /* Try fixing the line in the preimage */
+ fixlen = ws_fix_copy(buf, orig, oldlen, ws_rule, NULL);
+
+ /* Try fixing the line in the target */
+ if (sizeof(tgtfixbuf) < tgtlen)
+ tgtfix = tgtfixbuf;
+ else
+ tgtfix = xmalloc(tgtlen);
+ tgtfixlen = ws_fix_copy(tgtfix, target, tgtlen, ws_rule, NULL);
+
+ /*
+ * If they match, either the preimage was based on
+ * a version before our tree fixed whitespace breakage,
+ * or we are lacking a whitespace-fix patch the tree
+ * the preimage was based on already had (i.e. target
+ * has whitespace breakage, the preimage doesn't).
+ * In either case, we are fixing the whitespace breakages
+ * so we might as well take the fix together with their
+ * real change.
+ */
+ match = (tgtfixlen == fixlen && !memcmp(tgtfix, buf, fixlen));
+
+ if (tgtfix != tgtfixbuf)
+ free(tgtfix);
+ if (!match)
+ goto unmatch_exit;
+
+ orig += oldlen;
+ buf += fixlen;
+ target += tgtlen;
+ }
+
/*
- * NEEDSWORK: We can optionally match fuzzily here, but
- * that is for a later round.
+ * Yes, the preimage is based on an older version that still
+ * has whitespace breakages unfixed, and fixing them makes the
+ * hunk match. Update the context lines in the postimage.
*/
+ update_pre_post_images(preimage, postimage,
+ fixed_buf, buf - fixed_buf);
+ return 1;
+
+ unmatch_exit:
+ free(fixed_buf);
return 0;
}
struct image *preimage,
struct image *postimage,
int line,
+ unsigned ws_rule,
int match_beginning, int match_end)
{
int i;
else if (match_end)
line = img->nr - preimage->nr;
+ if (line > img->nr)
+ line = img->nr;
+
try = 0;
for (i = 0; i < line; i++)
try += img->line[i].len;
for (i = 0; ; i++) {
if (match_fragment(img, preimage, postimage,
- try, try_lno,
+ try, try_lno, ws_rule,
match_beginning, match_end))
return try_lno;
img->len -= img->line[--img->nr].len;
}
-static int apply_line(char *output, const char *patch, int plen,
- unsigned ws_rule)
-{
- /*
- * plen is number of bytes to be copied from patch,
- * starting at patch+1 (patch[0] is '+'). Typically
- * patch[plen] is '\n', unless this is the incomplete
- * last line.
- */
- int i;
- int add_nl_to_tail = 0;
- int fixed = 0;
- int last_tab_in_indent = 0;
- int last_space_in_indent = 0;
- int need_fix_leading_space = 0;
- char *buf;
-
- if ((ws_error_action != correct_ws_error) || !whitespace_error ||
- *patch != '+') {
- memcpy(output, patch + 1, plen);
- return plen;
- }
-
- /*
- * Strip trailing whitespace
- */
- if ((ws_rule & WS_TRAILING_SPACE) &&
- (1 < plen && isspace(patch[plen-1]))) {
- if (patch[plen] == '\n')
- add_nl_to_tail = 1;
- plen--;
- while (0 < plen && isspace(patch[plen]))
- plen--;
- fixed = 1;
- }
-
- /*
- * Check leading whitespaces (indent)
- */
- for (i = 1; i < plen; i++) {
- char ch = patch[i];
- if (ch == '\t') {
- last_tab_in_indent = i;
- if ((ws_rule & WS_SPACE_BEFORE_TAB) &&
- 0 < last_space_in_indent)
- need_fix_leading_space = 1;
- } else if (ch == ' ') {
- last_space_in_indent = i;
- if ((ws_rule & WS_INDENT_WITH_NON_TAB) &&
- 8 <= i - last_tab_in_indent)
- need_fix_leading_space = 1;
- }
- else
- break;
- }
-
- buf = output;
- if (need_fix_leading_space) {
- int consecutive_spaces = 0;
- int last = last_tab_in_indent + 1;
-
- if (ws_rule & WS_INDENT_WITH_NON_TAB) {
- /* have "last" point at one past the indent */
- if (last_tab_in_indent < last_space_in_indent)
- last = last_space_in_indent + 1;
- else
- last = last_tab_in_indent + 1;
- }
-
- /*
- * between patch[1..last], strip the funny spaces,
- * updating them to tab as needed.
- */
- for (i = 1; i < last; i++, plen--) {
- char ch = patch[i];
- if (ch != ' ') {
- consecutive_spaces = 0;
- *output++ = ch;
- } else {
- consecutive_spaces++;
- if (consecutive_spaces == 8) {
- *output++ = '\t';
- consecutive_spaces = 0;
- }
- }
- }
- while (0 < consecutive_spaces--)
- *output++ = ' ';
- fixed = 1;
- i = last;
- }
- else
- i = 1;
-
- memcpy(output, patch + i, plen);
- if (add_nl_to_tail)
- output[plen++] = '\n';
- if (fixed)
- applied_after_fixing_ws++;
- return output + plen - buf;
-}
-
static void update_image(struct image *img,
int applied_pos,
struct image *preimage,
int match_beginning, match_end;
const char *patch = frag->patch;
int size = frag->size;
- char *old = xmalloc(size);
- char *new = xmalloc(size);
- char *oldlines, *newlines;
- int oldsize = 0, newsize = 0;
+ char *old, *new, *oldlines, *newlines;
int new_blank_lines_at_end = 0;
unsigned long leading, trailing;
int pos, applied_pos;
struct image preimage;
struct image postimage;
+ memset(&preimage, 0, sizeof(preimage));
+ memset(&postimage, 0, sizeof(postimage));
+ oldlines = xmalloc(size);
+ newlines = xmalloc(size);
+
+ old = oldlines;
+ new = newlines;
while (size > 0) {
char first;
int len = linelen(patch, size);
- int plen;
+ int plen, added;
int added_blank_line = 0;
if (!len)
* followed by "\ No newline", then we also remove the
* last one (which is the newline, of course).
*/
- plen = len-1;
+ plen = len - 1;
if (len < size && patch[len] == '\\')
plen--;
first = *patch;
if (plen < 0)
/* ... followed by '\No newline'; nothing */
break;
- old[oldsize++] = '\n';
- new[newsize++] = '\n';
+ *old++ = '\n';
+ *new++ = '\n';
+ add_line_info(&preimage, "\n", 1, LINE_COMMON);
+ add_line_info(&postimage, "\n", 1, LINE_COMMON);
break;
case ' ':
case '-':
- memcpy(old + oldsize, patch + 1, plen);
- oldsize += plen;
+ memcpy(old, patch + 1, plen);
+ add_line_info(&preimage, old, plen,
+ (first == ' ' ? LINE_COMMON : 0));
+ old += plen;
if (first == '-')
break;
/* Fall-through for ' ' */
case '+':
- if (first != '+' || !no_add) {
- int added = apply_line(new + newsize, patch,
- plen, ws_rule);
- newsize += added;
- if (first == '+' &&
- added == 1 && new[newsize-1] == '\n')
- added_blank_line = 1;
+ /* --no-add does not add new lines */
+ if (first == '+' && no_add)
+ break;
+
+ if (first != '+' ||
+ !whitespace_error ||
+ ws_error_action != correct_ws_error) {
+ memcpy(new, patch + 1, plen);
+ added = plen;
+ }
+ else {
+ added = ws_fix_copy(new, patch + 1, plen, ws_rule, &applied_after_fixing_ws);
}
+ add_line_info(&postimage, new, added,
+ (first == '+' ? 0 : LINE_COMMON));
+ new += added;
+ if (first == '+' &&
+ added == 1 && new[-1] == '\n')
+ added_blank_line = 1;
break;
case '@': case '\\':
/* Ignore it, we already handled it */
patch += len;
size -= len;
}
-
if (inaccurate_eof &&
- oldsize > 0 && old[oldsize - 1] == '\n' &&
- newsize > 0 && new[newsize - 1] == '\n') {
- oldsize--;
- newsize--;
+ old > oldlines && old[-1] == '\n' &&
+ new > newlines && new[-1] == '\n') {
+ old--;
+ new--;
}
- oldlines = old;
- newlines = new;
leading = frag->leading;
trailing = frag->trailing;
}
pos = frag->newpos ? (frag->newpos - 1) : 0;
- prepare_image(&preimage, oldlines, oldsize, 1);
- prepare_image(&postimage, newlines, newsize, 1);
+ preimage.buf = oldlines;
+ preimage.len = old - oldlines;
+ postimage.buf = newlines;
+ postimage.len = new - newlines;
+ preimage.line = preimage.line_allocated;
+ postimage.line = postimage.line_allocated;
+
for (;;) {
- applied_pos = find_pos(img, &preimage, &postimage,
- pos, match_beginning, match_end);
+ applied_pos = find_pos(img, &preimage, &postimage, pos,
+ ws_rule, match_beginning, match_end);
if (applied_pos >= 0)
break;
update_image(img, applied_pos, &preimage, &postimage);
} else {
if (apply_verbosely)
- error("while searching for:\n%.*s", oldsize, oldlines);
+ error("while searching for:\n%.*s",
+ (int)(old - oldlines), oldlines);
}
- free(old);
- free(new);
+ free(oldlines);
+ free(newlines);
free(preimage.line_allocated);
free(postimage.line_allocated);
if (!ce)
return 0;
- if (S_ISGITLINK(ntohl(ce->ce_mode))) {
+ if (S_ISGITLINK(ce->ce_mode)) {
strbuf_grow(buf, 100);
strbuf_addf(buf, "Subproject commit %s\n", sha1_to_hex(ce->sha1));
} else {
static int verify_index_match(struct cache_entry *ce, struct stat *st)
{
- if (S_ISGITLINK(ntohl(ce->ce_mode))) {
+ if (S_ISGITLINK(ce->ce_mode)) {
if (!S_ISDIR(st->st_mode))
return -1;
return 0;
return error("%s: does not match index",
old_name);
if (cached)
- st_mode = ntohl(ce->ce_mode);
+ st_mode = ce->ce_mode;
} else if (stat_ret < 0)
return error("%s: %s", old_name, strerror(errno));
if (!cached)
- st_mode = ntohl(ce_mode_from_stat(ce, st.st_mode));
+ st_mode = ce_mode_from_stat(ce, st.st_mode);
if (patch->is_new < 0)
patch->is_new = 0;
ce = xcalloc(1, ce_size);
memcpy(ce->name, path, namelen);
ce->ce_mode = create_ce_mode(mode);
- ce->ce_flags = htons(namelen);
+ ce->ce_flags = namelen;
if (S_ISGITLINK(mode)) {
const char *s = buf;
static int git_apply_config(const char *var, const char *value)
{
if (!strcmp(var, "apply.whitespace")) {
+ if (!value)
+ return config_error_nonbool(var);
apply_default_whitespace = xstrdup(value);
return 0;
}