diff options
| -rw-r--r-- | diff.c | 49 |
1 files changed, 35 insertions, 14 deletions
@@ -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); } } |