1 3b0f3d61 2020-01-22 neels /* Common parts for printing diff output */
3 3b0f3d61 2020-01-22 neels * Copyright (c) 2020 Neels Hofmeyr <neels@hofmeyr.de>
5 3b0f3d61 2020-01-22 neels * Permission to use, copy, modify, and distribute this software for any
6 3b0f3d61 2020-01-22 neels * purpose with or without fee is hereby granted, provided that the above
7 3b0f3d61 2020-01-22 neels * copyright notice and this permission notice appear in all copies.
9 3b0f3d61 2020-01-22 neels * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
10 3b0f3d61 2020-01-22 neels * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
11 3b0f3d61 2020-01-22 neels * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
12 3b0f3d61 2020-01-22 neels * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
13 3b0f3d61 2020-01-22 neels * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
14 3b0f3d61 2020-01-22 neels * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
15 3b0f3d61 2020-01-22 neels * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
18 e10a628a 2020-09-16 stsp #include <inttypes.h>
19 e10a628a 2020-09-16 stsp #include <stdbool.h>
20 e10a628a 2020-09-16 stsp #include <stdio.h>
21 e10a628a 2020-09-16 stsp #include <stdlib.h>
22 c6eecea3 2020-07-26 stsp #include <unistd.h>
24 e10a628a 2020-09-16 stsp #include <diff/arraylist.h>
25 e10a628a 2020-09-16 stsp #include <diff/diff_main.h>
26 3b0f3d61 2020-01-22 neels #include <diff/diff_output.h>
29 c6eecea3 2020-07-26 stsp get_atom_byte(struct diff_atom *atom, off_t off)
34 c6eecea3 2020-07-26 stsp if (atom->at != NULL)
35 c6eecea3 2020-07-26 stsp return atom->at[off];
37 c6eecea3 2020-07-26 stsp cur = lseek(atom->d->root->fd, 0, SEEK_CUR);
38 c6eecea3 2020-07-26 stsp if (cur == -1)
39 c6eecea3 2020-07-26 stsp abort(); /* XXX cannot return error */
41 c6eecea3 2020-07-26 stsp if (cur != atom->pos + off &&
42 c6eecea3 2020-07-26 stsp lseek(atom->d->root->fd, atom->pos + off, SEEK_SET) == -1)
43 c6eecea3 2020-07-26 stsp abort(); /* XXX cannot return error */
45 c6eecea3 2020-07-26 stsp if (read(atom->d->root->fd, &ch, sizeof(ch)) == -1)
46 c6eecea3 2020-07-26 stsp abort(); /* XXX cannot return error */
52 0d27172a 2020-05-06 neels diff_output_lines(FILE *dest, const char *prefix, struct diff_atom *start_atom,
53 0d27172a 2020-05-06 neels unsigned int count)
55 3b0f3d61 2020-01-22 neels struct diff_atom *atom;
56 3b0f3d61 2020-01-22 neels foreach_diff_atom(atom, start_atom, count) {
57 3b0f3d61 2020-01-22 neels fprintf(dest, "%s", prefix);
59 3b0f3d61 2020-01-22 neels unsigned int len = atom->len;
62 c6eecea3 2020-07-26 stsp ch = get_atom_byte(atom, len - 1);
63 c6eecea3 2020-07-26 stsp if (ch == '\n')
66 c6eecea3 2020-07-26 stsp ch = get_atom_byte(atom, len - 1);
67 c6eecea3 2020-07-26 stsp if (ch == '\r')
72 3b0f3d61 2020-01-22 neels for (i = 0; i < len; i++) {
73 c6eecea3 2020-07-26 stsp char c = get_atom_byte(atom, i);
74 fbd55577 2020-01-27 neels if ((c < 0x20 || c >= 0x7f) && c != '\t')
75 3b0f3d61 2020-01-22 neels fprintf(dest, "\\x%02x", (unsigned char)c);
77 3b0f3d61 2020-01-22 neels fprintf(dest, "%c", c);
79 3b0f3d61 2020-01-22 neels fprintf(dest, "\n");