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Merge branch 'jc/maint-1.6.0-blank-at-eof' (early part) into jc/maint-blank-at-eof

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* 'jc/maint-1.6.0-blank-at-eof' (early part):
  diff.c: emit_add_line() takes only the rest of the line
  diff.c: split emit_line() from the first char and the rest of the line
This commit is contained in:
Junio C Hamano 2009-09-15 11:20:46 -07:00
parent bb35fefbc9 018cff7046
commit 61c6457e89
1 changed files with 35 additions and 14 deletions
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49
diff.c
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@ -273,18 +273,31 @@ static void check_blank_at_eof(mmfile_t *mf1, mmfile_t *mf2,
ecbdata->blank_at_eof_in_postimage = (at - l2) + 1;
}
static void emit_line(FILE *file, const char *set, const char *reset, const char *line, int len)
static void emit_line_0(FILE *file, const char *set, const char *reset,
int first, const char *line, int len)
{
int has_trailing_newline, has_trailing_carriage_return;
int nofirst;
has_trailing_newline = (len > 0 && line[len-1] == '\n');
if (has_trailing_newline)
len--;
has_trailing_carriage_return = (len > 0 && line[len-1] == '\r');
if (has_trailing_carriage_return)
len--;
if (len == 0) {
has_trailing_newline = (first == '\n');
has_trailing_carriage_return = (!has_trailing_newline &&
(first == '\r'));
nofirst = has_trailing_newline || has_trailing_carriage_return;
} else {
has_trailing_newline = (len > 0 && line[len-1] == '\n');
if (has_trailing_newline)
len--;
has_trailing_carriage_return = (len > 0 && line[len-1] == '\r');
if (has_trailing_carriage_return)
len--;
nofirst = 0;
}
fputs(set, file);
if (!nofirst)
fputc(first, file);
fwrite(line, len, 1, file);
fputs(reset, file);
if (has_trailing_carriage_return)
@ -293,6 +306,12 @@ static void emit_line(FILE *file, const char *set, const char *reset, const char
fputc('\n', file);
}
static void emit_line(FILE *file, const char *set, const char *reset,
const char *line, int len)
{
emit_line_0(file, set, reset, line[0], line+1, len-1);
}
static int new_blank_line_at_eof(struct emit_callback *ecbdata, const char *line, int len)
{
if (!((ecbdata->ws_rule & WS_BLANK_AT_EOF) &&
@ -301,23 +320,25 @@ static int new_blank_line_at_eof(struct emit_callback *ecbdata, const char *line
ecbdata->blank_at_eof_in_preimage <= ecbdata->lno_in_preimage &&
ecbdata->blank_at_eof_in_postimage <= ecbdata->lno_in_postimage))
return 0;
return ws_blank_line(line + 1, len - 1, ecbdata->ws_rule);
return ws_blank_line(line, len, ecbdata->ws_rule);
}
static void emit_add_line(const char *reset, struct emit_callback *ecbdata, const char *line, int len)
static void emit_add_line(const char *reset,
struct emit_callback *ecbdata,
const char *line, int len)
{
const char *ws = diff_get_color(ecbdata->color_diff, DIFF_WHITESPACE);
const char *set = diff_get_color(ecbdata->color_diff, DIFF_FILE_NEW);
if (!*ws)
emit_line(ecbdata->file, set, reset, line, len);
emit_line_0(ecbdata->file, set, reset, '+', line, len);
else if (new_blank_line_at_eof(ecbdata, line, len))
/* Blank line at EOF - paint '+' as well */
emit_line(ecbdata->file, ws, reset, line, len);
emit_line_0(ecbdata->file, ws, reset, '+', line, len);
else {
/* Emit just the prefix, then the rest. */
emit_line(ecbdata->file, set, reset, line, 1);
ws_check_emit(line + 1, len - 1, ecbdata->ws_rule,
emit_line_0(ecbdata->file, set, reset, '+', "", 0);
ws_check_emit(line, len, ecbdata->ws_rule,
ecbdata->file, set, reset, ws);
}
}
@ -770,7 +791,7 @@ static void fn_out_consume(void *priv, char *line, unsigned long len)
emit_line(ecbdata->file, color, reset, line, len);
} else {
ecbdata->lno_in_postimage++;
emit_add_line(reset, ecbdata, line, len);
emit_add_line(reset, ecbdata, line + 1, len - 1);
}
}