зеркало из https://github.com/microsoft/git.git
ws_fix_copy(): move the whitespace fixing function to ws.c
This is used by git-apply but we can use it elsewhere by slightly generalizing it. Signed-off-by: Junio C Hamano <gitster@pobox.com>
This commit is contained in:
Junio C Hamano
Родитель
52f3c81a9d
Коммит
fe3403c320
111
builtin-apply.c
111
builtin-apply.c
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@ -1515,110 +1515,6 @@ static int read_old_data(struct stat *st, const char *path, struct strbuf *buf)
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}
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}
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static int copy_wsfix(char *output, const char *patch, int plen,
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unsigned ws_rule, int count_error)
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{
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/*
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* plen is number of bytes to be copied from patch, starting
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* at patch. Typically patch[plen-1] is '\n', unless this is
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* the incomplete last line.
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*/
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int i;
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int add_nl_to_tail = 0;
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int add_cr_to_tail = 0;
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int fixed = 0;
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int last_tab_in_indent = -1;
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int last_space_in_indent = -1;
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int need_fix_leading_space = 0;
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char *buf;
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/*
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* Strip trailing whitespace
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*/
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if ((ws_rule & WS_TRAILING_SPACE) &&
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(2 < plen && isspace(patch[plen-2]))) {
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if (patch[plen - 1] == '\n') {
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add_nl_to_tail = 1;
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plen--;
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if (1 < plen && patch[plen - 1] == '\r') {
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add_cr_to_tail = !!(ws_rule & WS_CR_AT_EOL);
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plen--;
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}
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}
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if (0 < plen && isspace(patch[plen - 1])) {
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while (0 < plen && isspace(patch[plen-1]))
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plen--;
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fixed = 1;
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}
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}
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/*
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* Check leading whitespaces (indent)
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*/
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for (i = 0; i < plen; i++) {
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char ch = patch[i];
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if (ch == '\t') {
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last_tab_in_indent = i;
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if ((ws_rule & WS_SPACE_BEFORE_TAB) &&
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0 <= last_space_in_indent)
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need_fix_leading_space = 1;
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} else if (ch == ' ') {
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last_space_in_indent = i;
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if ((ws_rule & WS_INDENT_WITH_NON_TAB) &&
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8 <= i - last_tab_in_indent)
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need_fix_leading_space = 1;
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} else
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break;
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}
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buf = output;
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if (need_fix_leading_space) {
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/* Process indent ourselves */
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int consecutive_spaces = 0;
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int last = last_tab_in_indent + 1;
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if (ws_rule & WS_INDENT_WITH_NON_TAB) {
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/* have "last" point at one past the indent */
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if (last_tab_in_indent < last_space_in_indent)
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last = last_space_in_indent + 1;
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else
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last = last_tab_in_indent + 1;
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}
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/*
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* between patch[0..last-1], strip the funny spaces,
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* updating them to tab as needed.
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*/
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for (i = 0; i < last; i++) {
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char ch = patch[i];
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if (ch != ' ') {
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consecutive_spaces = 0;
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*output++ = ch;
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} else {
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consecutive_spaces++;
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if (consecutive_spaces == 8) {
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*output++ = '\t';
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consecutive_spaces = 0;
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}
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}
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}
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while (0 < consecutive_spaces--)
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*output++ = ' ';
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plen -= last;
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patch += last;
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fixed = 1;
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}
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memcpy(output, patch, plen);
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if (add_cr_to_tail)
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output[plen++] = '\r';
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if (add_nl_to_tail)
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output[plen++] = '\n';
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if (fixed && count_error)
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applied_after_fixing_ws++;
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return output + plen - buf;
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}
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static void update_pre_post_images(struct image *preimage,
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struct image *postimage,
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char *buf,
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@ -1740,14 +1636,14 @@ static int match_fragment(struct image *img,
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int match;
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/* Try fixing the line in the preimage */
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fixlen = copy_wsfix(buf, orig, oldlen, ws_rule, 0);
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fixlen = ws_fix_copy(buf, orig, oldlen, ws_rule, NULL);
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/* Try fixing the line in the target */
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if (sizeof(tgtfixbuf) < tgtlen)
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tgtfix = tgtfixbuf;
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else
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tgtfix = xmalloc(tgtlen);
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tgtfixlen = copy_wsfix(tgtfix, target, tgtlen, ws_rule, 0);
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tgtfixlen = ws_fix_copy(tgtfix, target, tgtlen, ws_rule, NULL);
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/*
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* If they match, either the preimage was based on
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@ -2006,8 +1902,7 @@ static int apply_one_fragment(struct image *img, struct fragment *frag,
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added = plen;
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}
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else {
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added = copy_wsfix(new, patch + 1, plen,
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ws_rule, 1);
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added = ws_fix_copy(new, patch + 1, plen, ws_rule, &applied_after_fixing_ws);
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}
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add_line_info(&postimage, new, added,
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(first == '+' ? 0 : LINE_COMMON));
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1
cache.h
1
cache.h
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@ -661,6 +661,7 @@ extern unsigned check_and_emit_line(const char *line, int len, unsigned ws_rule,
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FILE *stream, const char *set,
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const char *reset, const char *ws);
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extern char *whitespace_error_string(unsigned ws);
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extern int ws_fix_copy(char *, const char *, int, unsigned, int *);
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/* ls-files */
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int pathspec_match(const char **spec, char *matched, const char *filename, int skiplen);
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104
ws.c
104
ws.c
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@ -212,3 +212,107 @@ unsigned check_and_emit_line(const char *line, int len, unsigned ws_rule,
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}
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return result;
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}
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/* Copy the line to the buffer while fixing whitespaces */
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int ws_fix_copy(char *dst, const char *src, int len, unsigned ws_rule, int *error_count)
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{
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/*
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* len is number of bytes to be copied from src, starting
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* at src. Typically src[len-1] is '\n', unless this is
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* the incomplete last line.
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*/
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int i;
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int add_nl_to_tail = 0;
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int add_cr_to_tail = 0;
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int fixed = 0;
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int last_tab_in_indent = -1;
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int last_space_in_indent = -1;
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int need_fix_leading_space = 0;
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char *buf;
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/*
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* Strip trailing whitespace
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*/
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if ((ws_rule & WS_TRAILING_SPACE) &&
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(2 < len && isspace(src[len-2]))) {
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if (src[len - 1] == '\n') {
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add_nl_to_tail = 1;
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len--;
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if (1 < len && src[len - 1] == '\r') {
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add_cr_to_tail = !!(ws_rule & WS_CR_AT_EOL);
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len--;
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}
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}
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if (0 < len && isspace(src[len - 1])) {
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while (0 < len && isspace(src[len-1]))
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len--;
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fixed = 1;
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}
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}
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/*
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* Check leading whitespaces (indent)
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*/
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for (i = 0; i < len; i++) {
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char ch = src[i];
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if (ch == '\t') {
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last_tab_in_indent = i;
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if ((ws_rule & WS_SPACE_BEFORE_TAB) &&
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0 <= last_space_in_indent)
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need_fix_leading_space = 1;
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} else if (ch == ' ') {
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last_space_in_indent = i;
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if ((ws_rule & WS_INDENT_WITH_NON_TAB) &&
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8 <= i - last_tab_in_indent)
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need_fix_leading_space = 1;
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} else
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break;
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}
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buf = dst;
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if (need_fix_leading_space) {
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/* Process indent ourselves */
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int consecutive_spaces = 0;
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int last = last_tab_in_indent + 1;
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if (ws_rule & WS_INDENT_WITH_NON_TAB) {
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/* have "last" point at one past the indent */
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if (last_tab_in_indent < last_space_in_indent)
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last = last_space_in_indent + 1;
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else
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last = last_tab_in_indent + 1;
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}
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/*
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* between src[0..last-1], strip the funny spaces,
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* updating them to tab as needed.
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*/
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for (i = 0; i < last; i++) {
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char ch = src[i];
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if (ch != ' ') {
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consecutive_spaces = 0;
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*dst++ = ch;
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} else {
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consecutive_spaces++;
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if (consecutive_spaces == 8) {
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*dst++ = '\t';
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consecutive_spaces = 0;
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}
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}
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}
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while (0 < consecutive_spaces--)
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*dst++ = ' ';
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len -= last;
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src += last;
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fixed = 1;
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}
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memcpy(dst, src, len);
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if (add_cr_to_tail)
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dst[len++] = '\r';
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if (add_nl_to_tail)
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dst[len++] = '\n';
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if (fixed && error_count)
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(*error_count)++;
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return dst + len - buf;
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}
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