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- FIXME: someone broke diff -r
- minor shrinkage i had lying around text data bss dec hex filename 7002 8 88 7098 1bba diff.o.orig 6936 8 81 7025 1b71 diff.o
This commit is contained in:
Bernhard Reutner-Fischer
parent
5568b722d4
commit
7ae93f0fe7
@ -67,6 +67,7 @@
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/* XXX: FIXME: the following variables should be static, but gcc currently
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* creates a much bigger object if we do this. [which version of gcc? --vda] */
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/* 4.x, IIRC also 3.x --bernhard */
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/* This is the default number of lines of context. */
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int context = 3;
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int status;
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@ -75,7 +76,7 @@ const char *label1;
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const char *label2;
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struct stat stb1, stb2;
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char **dl;
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USE_FEATURE_DIFF_DIR(static int dl_count;)
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USE_FEATURE_DIFF_DIR(int dl_count;)
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struct cand {
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int x;
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@ -108,7 +109,7 @@ static int clen;
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static int len[2];
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static int pref, suff; /* length of prefix and suffix */
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static int slen[2];
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static int anychange;
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static smallint anychange;
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static long *ixnew; /* will be overlaid on file[1] */
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static long *ixold; /* will be overlaid on klist */
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static struct cand *clist; /* merely a free storage pot for candidates */
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@ -129,9 +130,9 @@ static void print_only(const char *path, size_t dirlen, const char *entry)
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static void print_status(int val, char *path1, char *path2, char *entry)
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{
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const char *const _entry = entry ? entry : "";
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char *_path1 = entry ? concat_path_file(path1, _entry) : path1;
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char *_path2 = entry ? concat_path_file(path2, _entry) : path2;
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const char * const _entry = entry ? entry : "";
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char * const _path1 = entry ? concat_path_file(path1, _entry) : path1;
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char * const _path2 = entry ? concat_path_file(path2, _entry) : path2;
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switch (val) {
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case D_ONLY:
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@ -173,8 +174,10 @@ static void print_status(int val, char *path1, char *path2, char *entry)
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free(_path2);
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}
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}
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static void fiddle_sum(int *sum, int t)
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{
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*sum = (int)(*sum * 127 + t);
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}
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/*
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* Hash function taken from Robert Sedgewick, Algorithms in C, 3d ed., p 578.
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*/
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@ -186,23 +189,14 @@ static int readhash(FILE * f)
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sum = 1;
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space = 0;
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if (!(option_mask32 & FLAG_b) && !(option_mask32 & FLAG_w)) {
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if (FLAG_i)
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for (i = 0; (t = getc(f)) != '\n'; i++) {
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if (t == EOF) {
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if (i == 0)
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return 0;
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break;
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}
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sum = sum * 127 + t;
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} else
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for (i = 0; (t = getc(f)) != '\n'; i++) {
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if (t == EOF) {
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if (i == 0)
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return 0;
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break;
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}
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sum = sum * 127 + t;
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for (i = 0; (t = getc(f)) != '\n'; i++) {
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if (t == EOF) {
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if (i == 0)
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return 0;
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break;
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}
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fiddle_sum(&sum, t);
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}
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} else {
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for (i = 0;;) {
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switch (t = getc(f)) {
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@ -218,7 +212,7 @@ static int readhash(FILE * f)
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i++;
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space = 0;
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}
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sum = sum * 127 + t;
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fiddle_sum(&sum, t);
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i++;
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continue;
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case EOF:
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@ -298,10 +292,12 @@ static void prune(void)
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int i, j;
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for (pref = 0; pref < len[0] && pref < len[1] &&
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file[0][pref + 1].value == file[1][pref + 1].value; pref++);
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file[0][pref + 1].value == file[1][pref + 1].value; pref++)
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;
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for (suff = 0; suff < len[0] - pref && suff < len[1] - pref &&
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file[0][len[0] - suff].value == file[1][len[1] - suff].value;
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suff++);
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suff++)
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;
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for (j = 0; j < 2; j++) {
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sfile[j] = file[j] + pref;
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slen[j] = len[j] - pref - suff;
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@ -621,12 +617,12 @@ static void uni_range(int a, int b)
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}
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static int fetch(long *f, int a, int b, FILE * lb, int ch)
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static void fetch(long *f, int a, int b, FILE * lb, int ch)
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{
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int i, j, c, lastc, col, nc;
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if (a > b)
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return 0;
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return;
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for (i = a; i <= b; i++) {
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fseek(lb, f[i - 1], SEEK_SET);
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nc = f[i] - f[i - 1];
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@ -638,8 +634,8 @@ static int fetch(long *f, int a, int b, FILE * lb, int ch)
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col = 0;
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for (j = 0, lastc = '\0'; j < nc; j++, lastc = c) {
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if ((c = getc(lb)) == EOF) {
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puts("\n\\ No newline at end of file");
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return 0;
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printf("\n\\ No newline at end of file\n");
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return;
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}
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if (c == '\t' && (option_mask32 & FLAG_t)) {
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do {
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@ -651,7 +647,7 @@ static int fetch(long *f, int a, int b, FILE * lb, int ch)
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}
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}
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}
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return 0;
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return;
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}
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@ -695,12 +691,11 @@ static void dump_unified_vec(FILE * f1, FILE * f2)
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lowc = MAX(1, cvp->c - context);
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upd = MIN(len[1], context_vec_ptr->d + context);
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fputs("@@ -", stdout);
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printf("@@ -");
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uni_range(lowa, upb);
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fputs(" +", stdout);
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printf(" +");
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uni_range(lowc, upd);
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fputs(" @@", stdout);
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putchar('\n');
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printf(" @@\n");
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/*
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* Output changes in "unified" diff format--the old and new lines
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@ -894,13 +889,12 @@ static void output(char *file1, FILE * f1, char *file2, FILE * f2)
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* 3*(number of k-candidates installed), typically about
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* 6n words for files of length n.
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*/
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static int diffreg(char *ofile1, char *ofile2, int flags)
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static unsigned diffreg(char * ofile1, char * ofile2, int flags)
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{
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char *file1 = ofile1;
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char *file2 = ofile2;
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FILE *f1 = stdin;
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FILE *f2 = stdin;
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int rval = D_SAME;
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FILE *f1 = stdin, *f2 = stdin;
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unsigned rval;
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int i;
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anychange = 0;
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@ -908,6 +902,9 @@ static int diffreg(char *ofile1, char *ofile2, int flags)
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if (S_ISDIR(stb1.st_mode) != S_ISDIR(stb2.st_mode))
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return (S_ISDIR(stb1.st_mode) ? D_MISMATCH1 : D_MISMATCH2);
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rval = D_SAME;
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if (LONE_DASH(file1) && LONE_DASH(file2))
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goto closem;
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@ -980,10 +977,8 @@ static int diffreg(char *ofile1, char *ofile2, int flags)
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if (rval == D_SAME)
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rval = D_DIFFER;
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}
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if (f1 != NULL)
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fclose(f1);
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if (f2 != NULL)
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fclose(f2);
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fclose_if_not_stdin(f1);
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fclose_if_not_stdin(f2);
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if (file1 != ofile1)
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free(file1);
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if (file2 != ofile2)
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@ -998,19 +993,23 @@ static void do_diff(char *dir1, char *path1, char *dir2, char *path2)
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int flags = D_HEADER;
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int val;
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char *fullpath1 = xasprintf("%s/%s", dir1, path1);
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char *fullpath2 = xasprintf("%s/%s", dir2, path2);
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char *fullpath1 = concat_path_file(dir1, path1);
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char *fullpath2 = concat_path_file(dir2, path2);
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if (stat(fullpath1, &stb1) != 0) {
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flags |= D_EMPTY1;
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memset(&stb1, 0, sizeof(stb1));
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fullpath1 = xasprintf("%s/%s", dir1, path2);
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if (ENABLE_FEATURE_CLEAN_UP)
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free(fullpath1);
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fullpath1 = concat_path_file(dir1, path2);
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}
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if (stat(fullpath2, &stb2) != 0) {
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flags |= D_EMPTY2;
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memset(&stb2, 0, sizeof(stb2));
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stb2.st_mode = stb1.st_mode;
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fullpath2 = xasprintf("%s/%s", dir2, path1);
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if (ENABLE_FEATURE_CLEAN_UP)
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free(fullpath2);
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fullpath2 = concat_path_file(dir2, path1);
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}
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if (stb1.st_mode == 0)
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@ -1173,7 +1172,7 @@ static void diffdir(char *p1, char *p2)
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int diff_main(int argc, char **argv)
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{
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int gotstdin = 0;
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smallint gotstdin = 0;
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char *U_opt;
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char *f1, *f2;
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llist_t *L_arg = NULL;
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@ -1234,6 +1233,7 @@ int diff_main(int argc, char **argv)
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f2 = concat_path_file(f2, f1);
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xstat(f2, &stb2);
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}
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/* XXX: FIXME: */
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/* We can't diff e.g. stdin supplied by a pipe - we use rewind(), fseek().
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* This can be fixed (volunteers?) */
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if (!S_ISREG(stb1.st_mode) || !S_ISREG(stb2.st_mode))
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