2019-05-11 18:36:22 -07:00
|
|
|
#include <stdio.h>
|
|
|
|
#include <stdlib.h>
|
|
|
|
#include <string.h>
|
|
|
|
|
2019-05-08 17:34:30 -07:00
|
|
|
#include "diff.h"
|
2019-05-11 19:39:28 -07:00
|
|
|
#include "pa.h"
|
2019-05-08 17:34:30 -07:00
|
|
|
|
2019-05-11 20:03:55 -07:00
|
|
|
// ================================================================ //
|
2019-05-08 17:34:30 -07:00
|
|
|
|
|
|
|
int main(int argc, const char* argv[]) {
|
|
|
|
|
2019-05-11 18:36:22 -07:00
|
|
|
init(--argc, ++argv);
|
|
|
|
loadfiles(files[0], files[1]);
|
2019-05-11 19:39:28 -07:00
|
|
|
|
2019-05-17 23:34:37 -07:00
|
|
|
if (**argv != '-' || diffnormal == 1) { standard(); }
|
2019-05-11 20:03:55 -07:00
|
|
|
|
2019-05-17 23:34:37 -07:00
|
|
|
if (showsidebyside) { sideside(); }
|
2019-05-11 20:58:14 -07:00
|
|
|
if (showbrief) { quiet(files[0], files[1]); }
|
|
|
|
if (report_identical) { loud(files[0], files[1]); }
|
2019-05-11 22:56:41 -07:00
|
|
|
|
2019-05-08 17:34:30 -07:00
|
|
|
return 0;
|
2019-05-11 19:39:28 -07:00
|
|
|
|
2019-05-08 17:34:30 -07:00
|
|
|
}
|
|
|
|
|
2019-05-11 20:03:55 -07:00
|
|
|
// ================================================================ //
|
2019-05-11 18:36:22 -07:00
|
|
|
|
|
|
|
void init(int argc, const char* argv[]) {
|
|
|
|
|
|
|
|
while (argc-- > 0) {
|
|
|
|
const char* arg = *argv;
|
|
|
|
|
|
|
|
setoption(arg, "-v", "--version", &showversion);
|
|
|
|
setoption(arg, "-q", "--brief", &showbrief);
|
|
|
|
setoption(arg, "-i", "--ignore-case", &ignorecase);
|
|
|
|
setoption(arg, "-s", "--report-identical-files", &report_identical);
|
|
|
|
setoption(arg, "--normal", NULL, &diffnormal);
|
|
|
|
setoption(arg, "-y", "--side-by-side", &showsidebyside);
|
|
|
|
setoption(arg, "--left-column", NULL, &showleftcolumn);
|
|
|
|
setoption(arg, "--suppress-common-lines", NULL, &suppresscommon);
|
|
|
|
setoption(arg, "-c", "--context", &showcontext);
|
|
|
|
setoption(arg, "-u", "showunified", &showunified);
|
2019-05-17 20:52:52 -07:00
|
|
|
setoption(arg, "--help", NULL, &showhelp);
|
2019-05-11 18:36:22 -07:00
|
|
|
|
|
|
|
if (arg[0] != '-') {
|
|
|
|
if (cnt == 2) {
|
|
|
|
fprintf(stderr, "Usage: ./diff [options] file1 file2\n");
|
|
|
|
exit(TOOMANYFILES_ERROR);
|
|
|
|
} else { files[cnt++] = arg; }
|
|
|
|
}
|
|
|
|
++argv;
|
|
|
|
}
|
|
|
|
|
2019-05-11 22:56:41 -07:00
|
|
|
// ================================= //
|
|
|
|
|
2019-05-17 23:34:37 -07:00
|
|
|
if (showversion) { version(); exit(0); }
|
|
|
|
if (showhelp) { help(); exit(0); }
|
2019-05-08 17:34:30 -07:00
|
|
|
|
2019-05-11 18:36:22 -07:00
|
|
|
if (!showcontext && !showunified &&
|
2019-05-17 23:34:37 -07:00
|
|
|
!showsidebyside && !showleftcolumn) { diffnormal = 1; }
|
2019-05-08 17:34:30 -07:00
|
|
|
|
2019-05-11 18:36:22 -07:00
|
|
|
if (((showsidebyside || showleftcolumn) &&
|
2019-05-17 23:34:37 -07:00
|
|
|
(diffnormal || showcontext || showunified)) ||
|
|
|
|
(showcontext && showunified) || (diffnormal &&
|
|
|
|
(showcontext || showunified))) { diff_output_conflict_error(); }
|
2019-05-11 20:03:55 -07:00
|
|
|
|
2019-05-11 18:36:22 -07:00
|
|
|
}
|
|
|
|
|
|
|
|
void setoption(const char* arg, const char* s, const char* t, int* value) {
|
|
|
|
if ((strcmp(arg, s) == 0) || ((t != NULL && strcmp(arg, t) == 0))) { *value = 1; }
|
|
|
|
}
|
|
|
|
void diff_output_conflict_error(void) {
|
|
|
|
|
2019-05-17 20:52:52 -07:00
|
|
|
fprintf(stderr, "diff-rcm: Conflicting output style options.\n");
|
2019-05-17 23:34:37 -07:00
|
|
|
fprintf(stderr, "diff-rcm: Try `diff --help' for more information.\n");
|
|
|
|
exit (CONFLICTING_OUTPUT_OPTIONS);
|
2019-05-11 18:36:22 -07:00
|
|
|
|
|
|
|
}
|
|
|
|
|
|
|
|
void loadfiles(const char* filename1, const char* filename2) {
|
2019-05-11 19:39:28 -07:00
|
|
|
|
2019-05-11 22:56:41 -07:00
|
|
|
if (filename2 == NULL) { printf("Usage: ./diff [options] file1 file2\n"); exit(1); }
|
|
|
|
|
2019-05-08 17:34:30 -07:00
|
|
|
memset(buf, 0, sizeof(buf));
|
|
|
|
memset(strings1, 0, sizeof(strings1));
|
|
|
|
memset(strings2, 0, sizeof(strings2));
|
|
|
|
|
2019-05-11 18:36:22 -07:00
|
|
|
FILE *fin1 = openfile(filename1, "r");
|
|
|
|
FILE *fin2 = openfile(filename2, "r");
|
|
|
|
|
|
|
|
while (!feof(fin1) && fgets(buf, BUFLEN, fin1) != NULL) { strings1[count1++] = strdup(buf); } fclose(fin1);
|
|
|
|
while (!feof(fin2) && fgets(buf, BUFLEN, fin2) != NULL) { strings2[count2++] = strdup(buf); } fclose(fin2);
|
2019-05-17 23:34:37 -07:00
|
|
|
|
|
|
|
fclose(fin1); fclose(fin2);
|
2019-05-11 18:36:22 -07:00
|
|
|
|
2019-05-08 17:34:30 -07:00
|
|
|
}
|
|
|
|
|
2019-05-17 23:34:37 -07:00
|
|
|
void version(void) {
|
2019-05-11 20:58:14 -07:00
|
|
|
printf("\n\n ██ ██ ████ ████ \n");
|
|
|
|
printf(" ░██░░ ░██░ ░██░ \n");
|
|
|
|
printf(" ░██ ██ ██████ ██████ ██████ █████ ██████████ \n");
|
|
|
|
printf(" ██████░██░░░██░ ░░░██░ █████░ ░██░░█ ██░░░██░░██░░██░░██ \n");
|
|
|
|
printf(" ██░░░██░██ ░██ ░██ ░░░░░ ░██ ░ ░██ ░░ ░██ ░██ ░██ \n");
|
|
|
|
printf(" ░██ ░██░██ ░██ ░██ ░██ ░██ ██ ░██ ░██ ░██ \n");
|
|
|
|
printf(" ░░██████░██ ░██ ░██ ░███ ░░█████ ███ ░██ ░██ \n");
|
|
|
|
printf(" ░░░░░░ ░░ ░░ ░░ ░░░ ░░░░░ ░░░ ░░ ░░ \n\n");
|
|
|
|
printf("\n");
|
|
|
|
printf("\tv0.5 alpha | Smoking is bad for your health.\n\n");
|
2019-05-08 17:34:30 -07:00
|
|
|
printf("Copyright (C) 2019 | All Rights Reserved.\n");
|
2019-05-11 20:58:14 -07:00
|
|
|
printf("Any unauthorized use or re-distribution of this code is permitted.\n\n");
|
2019-05-11 22:56:41 -07:00
|
|
|
printf("\tChris Nutter\tWilliam McCarthy Rasputin\n\n\n");
|
2019-05-08 17:34:30 -07:00
|
|
|
}
|
2019-05-17 23:34:37 -07:00
|
|
|
void help(void) {
|
2019-05-11 22:56:41 -07:00
|
|
|
printf("\nUsage: diff-rcm [OPTION]... FILES\n");
|
|
|
|
printf("Compare FILES line by line.\n\n");
|
|
|
|
printf("Mandatory arguments to long options are mandatory for short options too.\n\n");
|
2019-05-17 20:52:52 -07:00
|
|
|
printf("\t --standard\t\t output a standard diff (the default)\n");
|
2019-05-11 22:56:41 -07:00
|
|
|
printf("\t-q, --brief\t\t report only when files differ\n");
|
|
|
|
printf("\t-s, --report-identical-files report when two files are the same\n");
|
|
|
|
printf("\t-c, -C NUM, --context[=NUM] output NUM (default 3) lines of copied context\n");
|
|
|
|
printf("\t-u, -U NUM, --unified[=NUM] output NUM (default 3) lines of unified context\n");
|
|
|
|
printf("\t-y, --side-by-side\t output in two columns\n\n");
|
|
|
|
printf("\t-i, --ignore-case\t ignore case differences in file contents\n\n");
|
|
|
|
printf("\t --help\t\t display this help and exit\n");
|
|
|
|
printf("\t-v, --version\t\t output version information and exit\n\n");
|
|
|
|
|
|
|
|
printf("FILES are 'FILE1 FILE2'\n");
|
|
|
|
printf("If --from-file or --to-file is given, there are no restrictions on FILE(s).\n");
|
|
|
|
printf("If a FILE is '-', read standard input.\n");
|
|
|
|
printf("Exit status is 0 if inputs are the same, 1 if different, 2 if trouble.\n\n");
|
|
|
|
printf("Report bugs to: cdnutter@gmail.com\n");
|
|
|
|
printf("diff-rcm homepage: <https://www.github.com/cdnutter/diff/>\n\n");
|
2019-05-08 17:34:30 -07:00
|
|
|
}
|
|
|
|
|
2019-05-17 23:34:37 -07:00
|
|
|
void standard(void) {
|
|
|
|
|
2019-05-08 17:34:30 -07:00
|
|
|
}
|
|
|
|
|
2019-05-17 23:34:37 -07:00
|
|
|
void sideside(void) {
|
2019-05-17 20:52:52 -07:00
|
|
|
|
2019-05-17 23:34:37 -07:00
|
|
|
p = pa_first(strings1, count1);
|
|
|
|
q = pa_first(strings2, count2);
|
|
|
|
int foundmatch = 0;
|
2019-05-17 20:52:52 -07:00
|
|
|
|
2019-05-17 23:34:37 -07:00
|
|
|
pa* qlast = q;
|
2019-05-17 20:52:52 -07:00
|
|
|
while(p != NULL) {
|
|
|
|
|
2019-05-15 17:24:09 -07:00
|
|
|
qlast = q;
|
2019-05-17 20:52:52 -07:00
|
|
|
foundmatch = 0;
|
|
|
|
|
|
|
|
while (q != NULL && (foundmatch = pa_equal(p, q)) == 0) { q = pa_next(q); }
|
|
|
|
q = qlast;
|
|
|
|
|
|
|
|
if (foundmatch) {
|
2019-05-17 23:34:37 -07:00
|
|
|
|
2019-05-17 20:52:52 -07:00
|
|
|
while ((foundmatch = pa_equal(p, q)) == 0) {
|
2019-05-17 23:34:37 -07:00
|
|
|
|
|
|
|
printcheck(q, NULL, printright);
|
2019-05-17 20:52:52 -07:00
|
|
|
q = pa_next(q);
|
|
|
|
qlast = q;
|
2019-05-17 23:34:37 -07:00
|
|
|
|
2019-05-17 20:52:52 -07:00
|
|
|
}
|
|
|
|
|
2019-05-17 23:34:37 -07:00
|
|
|
if (showleftcolumn) { printcheck(p, q, printnocommon); }
|
|
|
|
else if (suppresscommon) { printcheck(p, q, printleftparen); }
|
|
|
|
else { printcheck(p, q, printboth); }
|
2019-05-17 20:52:52 -07:00
|
|
|
|
|
|
|
p = pa_next(p);
|
|
|
|
q = pa_next(q);
|
2019-05-17 23:34:37 -07:00
|
|
|
|
2019-05-17 20:52:52 -07:00
|
|
|
}
|
|
|
|
|
2019-05-17 23:34:37 -07:00
|
|
|
else { printcheck(p, NULL, printleft); p = pa_next(p); }
|
|
|
|
|
2019-05-15 17:24:09 -07:00
|
|
|
}
|
2019-05-17 20:52:52 -07:00
|
|
|
|
2019-05-17 23:34:37 -07:00
|
|
|
while(q != NULL) {
|
|
|
|
|
|
|
|
printcheck(q, NULL, printright);
|
|
|
|
q = pa_next(q);
|
|
|
|
|
|
|
|
}
|
2019-05-08 17:34:30 -07:00
|
|
|
}
|
2019-05-17 20:52:52 -07:00
|
|
|
|
2019-05-17 23:34:37 -07:00
|
|
|
void quiet(const char* filename1, const char* filename2) { if (identical(filename1, filename2) == 0) { printf("Files %s and %s differ.\n", filename1, filename2); } }
|
2019-05-11 20:58:14 -07:00
|
|
|
void loud(const char* filename1, const char* filename2) {
|
|
|
|
|
2019-05-17 23:34:37 -07:00
|
|
|
if (*filename1 == *filename2 || (pa_equal(p, q) != 0)) { printf("Files %s and %s are identical.\n", filename1, filename2); }
|
|
|
|
else { standard(); }
|
2019-05-11 20:58:14 -07:00
|
|
|
|
|
|
|
}
|
2019-05-15 17:24:09 -07:00
|
|
|
|
2019-05-17 23:34:37 -07:00
|
|
|
int identical(const char* filename1, const char* filename2) { if (*filename1 == *filename2) { exit(0); } else return 0; }
|