1 /* xbt_str.c - various helping functions to deal with strings */
3 /* Copyright (c) 2007, 2008, 2009, 2010. The SimGrid Team.
4 * All rights reserved. */
6 /* This program is free software; you can redistribute it and/or modify it
7 * under the terms of the license (GNU LGPL) which comes with this package. */
11 #include "xbt/sysdep.h"
12 #include "xbt/str.h" /* headers of these functions */
13 #include "xbt/strbuff.h"
14 #include "xbt/matrix.h" /* for the diff */
16 /** @brief Strip whitespace (or other characters) from the end of a string.
18 * Strips the whitespaces from the end of s.
19 * By default (when char_list=NULL), these characters get stripped:
21 * - " " (ASCII 32 (0x20)) space.
22 * - "\t" (ASCII 9 (0x09)) tab.
23 * - "\n" (ASCII 10 (0x0A)) line feed.
24 * - "\r" (ASCII 13 (0x0D)) carriage return.
25 * - "\0" (ASCII 0 (0x00)) NULL.
26 * - "\x0B" (ASCII 11 (0x0B)) vertical tab.
28 * @param s The string to strip. Modified in place.
29 * @param char_list A string which contains the characters you want to strip.
32 void xbt_str_rtrim(char *s, const char *char_list)
35 const char *__char_list = " \t\n\r\x0B";
36 char white_char[256] = { 1, 0 };
42 while (*__char_list) {
43 white_char[(unsigned char) *__char_list++] = 1;
47 white_char[(unsigned char) *char_list++] = 1;
54 while ((cur >= s) && white_char[(unsigned char) *cur])
60 /** @brief Strip whitespace (or other characters) from the beginning of a string.
62 * Strips the whitespaces from the begining of s.
63 * By default (when char_list=NULL), these characters get stripped:
65 * - " " (ASCII 32 (0x20)) space.
66 * - "\t" (ASCII 9 (0x09)) tab.
67 * - "\n" (ASCII 10 (0x0A)) line feed.
68 * - "\r" (ASCII 13 (0x0D)) carriage return.
69 * - "\0" (ASCII 0 (0x00)) NULL.
70 * - "\x0B" (ASCII 11 (0x0B)) vertical tab.
72 * @param s The string to strip. Modified in place.
73 * @param char_list A string which contains the characters you want to strip.
76 void xbt_str_ltrim(char *s, const char *char_list)
79 const char *__char_list = " \t\n\r\x0B";
80 char white_char[256] = { 1, 0 };
86 while (*__char_list) {
87 white_char[(unsigned char) *__char_list++] = 1;
91 white_char[(unsigned char) *char_list++] = 1;
95 while (*cur && white_char[(unsigned char) *cur])
98 memmove(s, cur, strlen(cur) + 1);
101 /** @brief Strip whitespace (or other characters) from the end and the begining of a string.
103 * Strips the whitespaces from both the beginning and the end of s.
104 * By default (when char_list=NULL), these characters get stripped:
106 * - " " (ASCII 32 (0x20)) space.
107 * - "\t" (ASCII 9 (0x09)) tab.
108 * - "\n" (ASCII 10 (0x0A)) line feed.
109 * - "\r" (ASCII 13 (0x0D)) carriage return.
110 * - "\0" (ASCII 0 (0x00)) NULL.
111 * - "\x0B" (ASCII 11 (0x0B)) vertical tab.
113 * @param s The string to strip.
114 * @param char_list A string which contains the characters you want to strip.
117 void xbt_str_trim(char *s, const char *char_list)
123 xbt_str_rtrim(s, char_list);
124 xbt_str_ltrim(s, char_list);
127 /** @brief Replace double whitespaces (but no other characters) from the string.
129 * The function modifies the string so that each time that several spaces appear,
130 * they are replaced by a single space. It will only do so for spaces (ASCII 32, 0x20).
132 * @param s The string to strip. Modified in place.
135 void xbt_str_strip_spaces(char *s)
171 /** @brief Substitutes a char for another in a string
173 * @param str the string to modify
174 * @param from char to search
175 * @param to char to put instead
176 * @param occurence number of changes to do (=0 means all)
178 void xbt_str_subst(char *str, char from, char to, int occurence)
192 /** @brief Replaces a set of variables by their values
194 * @param str The input of the replacement process
195 * @param patterns The changes to apply
196 * @return The string modified
198 * Both '$toto' and '${toto}' are valid (and the two writing are equivalent).
200 * If the variable name contains spaces, use the brace version (ie, ${toto tutu})
202 * You can provide a default value to use if the variable is not set in the dict by using
203 * '${var:=default}' or '${var:-default}'. These two forms are equivalent, even if they
204 * shouldn't to respect the shell standard (:= form should set the value in the dict,
205 * but does not) (BUG).
208 char *xbt_str_varsubst(const char *str, xbt_dict_t patterns)
210 xbt_strbuff_t buff = xbt_strbuff_new_from(str);
212 xbt_strbuff_varsubst(buff, patterns);
214 xbt_strbuff_free_container(buff);
219 /** @brief Splits a string into a dynar of strings
221 * @param s: the string to split
222 * @param sep: a string of all chars to consider as separator.
224 * By default (with sep=NULL), these characters are used as separator:
226 * - " " (ASCII 32 (0x20)) space.
227 * - "\t" (ASCII 9 (0x09)) tab.
228 * - "\n" (ASCII 10 (0x0A)) line feed.
229 * - "\r" (ASCII 13 (0x0D)) carriage return.
230 * - "\0" (ASCII 0 (0x00)) NULL.
231 * - "\x0B" (ASCII 11 (0x0B)) vertical tab.
234 xbt_dynar_t xbt_str_split(const char *s, const char *sep)
236 xbt_dynar_t res = xbt_dynar_new(sizeof(char *), &xbt_free_ref);
239 const char *sep_dflt = " \t\n\r\x0B";
240 char is_sep[256] = { 1, 0 };
242 /* check what are the separators */
243 memset(is_sep, 0, sizeof(is_sep));
246 is_sep[(unsigned char) *sep_dflt++] = 1;
249 is_sep[(unsigned char) *sep++] = 1;
251 is_sep[0] = 1; /* End of string is also separator */
262 while (!is_sep[(unsigned char) *q]) {
268 topush = xbt_malloc(q - p + 1);
269 memcpy(topush, p, q - p);
270 topush[q - p] = '\0';
271 xbt_dynar_push(res, &topush);
279 * \brief This functions splits a string after using another string as separator
280 * For example A!!B!!C splitted after !! will return the dynar {A,B,C}
281 * \return An array of dynars containing the string tokens
283 xbt_dynar_t xbt_str_split_str(const char *s, const char *sep)
285 xbt_dynar_t res = xbt_dynar_new(sizeof(char *), &xbt_free_ref);
294 if (sep[0] == '\0') {
296 xbt_dynar_push(res, &s);
303 //get the start of the first occurence of the substring
305 //if substring was not found add the entire string
308 to_push = xbt_malloc(v + 1);
309 memcpy(to_push, p, v);
311 xbt_dynar_push(res, &to_push);
315 to_push = xbt_malloc(q - p + 1);
316 memcpy(to_push, p, q - p);
317 //add string terminator
318 to_push[q - p] = '\0';
319 xbt_dynar_push(res, &to_push);
326 /** @brief Just like @ref xbt_str_split_quoted (Splits a string into a dynar of strings), but without memory allocation
328 * The string passed as argument must be writable (not const)
329 * The elements of the dynar are just parts of the string passed as argument.
330 * So if you don't store that argument elsewhere, you should free it in addition
331 * to freeing the dynar. This can be done by simply freeing the first argument
333 * free(xbt_dynar_get_ptr(dynar,0));
335 * Actually this function puts a bunch of \0 in the memory area you passed as
336 * argument to separate the elements, and pushes the address of each chunk
337 * in the resulting dynar. Yes, that's uneven. Yes, that's gory. But that's efficient.
339 xbt_dynar_t xbt_str_split_quoted_in_place(char *s) {
340 xbt_dynar_t res = xbt_dynar_new(sizeof(char *), NULL);
341 char *beg, *end; /* pointers around the parsed chunk */
342 int in_simple_quote = 0, in_double_quote = 0;
344 int ctn = 0; /* Got something in this block */
351 /* do not trim leading spaces: caller responsibility to clean his cruft */
360 /* Protected char; move it closer */
361 memmove(end, end + 1, strlen(end));
363 THROWF(arg_error, 0, "String ends with \\");
364 end++; /* Pass the protected char */
369 if (!in_double_quote) {
370 in_simple_quote = !in_simple_quote;
371 memmove(end, end + 1, strlen(end));
373 /* simple quote protected by double ones */
379 if (!in_simple_quote) {
380 in_double_quote = !in_double_quote;
381 memmove(end, end + 1, strlen(end));
383 /* double quote protected by simple ones */
392 if (*end == '\0' && (in_simple_quote || in_double_quote)) {
394 "End of string found while searching for %c in %s",
395 (in_simple_quote ? '\'' : '"'), s);
397 if (in_simple_quote || in_double_quote) {
405 /* Found a separator. Push the string if contains something */
406 xbt_dynar_push(res, &beg);
414 /* trim within the string, manually to speed things up */
429 /** @brief Splits a string into a dynar of strings, taking quotes into account
431 * It basically does the same argument separation than the shell, where white
432 * spaces can be escaped and where arguments are never split within a
434 * Several subsequent spaces are ignored (unless within quotes, of course).
435 * You may want to trim the input string, if you want to avoid empty entries
439 xbt_dynar_t xbt_str_split_quoted(const char *s)
441 xbt_dynar_t res = xbt_dynar_new(sizeof(char *), &xbt_free_ref);
443 char *str_to_free; /* we have to copy the string before, to handle backslashes */
449 str_to_free = xbt_strdup(s);
451 parsed = xbt_str_split_quoted_in_place(str_to_free);
452 xbt_dynar_foreach(parsed,cursor,p) {
453 char *q=xbt_strdup(p);
454 xbt_dynar_push(res,&q);
457 xbt_dynar_shrink(res, 0);
458 xbt_dynar_free(&parsed);
462 /** @brief Join a set of strings as a single string */
463 char *xbt_str_join(xbt_dynar_t dyn, const char *sep)
465 int len = 1, dyn_len = xbt_dynar_length(dyn);
471 return xbt_strdup("");
473 /* compute the length */
474 xbt_dynar_foreach(dyn, cpt, cursor) {
475 len += strlen(cursor);
477 len += strlen(sep) * dyn_len;
479 res = xbt_malloc(len);
481 xbt_dynar_foreach(dyn, cpt, cursor) {
482 if ((int) cpt < dyn_len - 1)
483 p += sprintf(p, "%s%s", cursor, sep);
485 p += sprintf(p, "%s", cursor);
489 /** @brief Join a set of strings as a single string
491 * The parameter must be a NULL-terminated array of chars,
492 * just like xbt_dynar_to_array() produces
494 char *xbt_str_join_array(const char *const *strs, const char *sep)
497 int amount_strings=0;
501 if ((!strs) || (!strs[0]))
502 return xbt_strdup("");
504 /* compute the length before malloc */
505 for (i=0;strs[i];i++) {
506 len += strlen(strs[i]);
509 len += strlen(sep) * amount_strings;
512 q = res = xbt_malloc(len);
513 for (i=0;strs[i];i++) {
514 if (i!=0) { // not first loop
515 q += sprintf(q, "%s%s", sep, strs[i]);
517 q += sprintf(q,"%s",strs[i]);
523 /** @brief Get a single line from the stream (reimplementation of the GNU getline)
525 * This is a redefinition of the GNU getline function, used on platforms where
526 * it does not exists.
528 * xbt_getline() reads an entire line from stream, storing the address of the
529 * buffer containing the text into *buf. The buffer is null-terminated and
530 * includes the newline character, if one was found.
532 * If *buf is NULL, then xbt_getline() will allocate a buffer for storing the
533 * line, which should be freed by the user program.
535 * Alternatively, before calling xbt_getline(), *buf can contain a pointer to a
536 * malloc()-allocated buffer *n bytes in size. If the buffer is not large
537 * enough to hold the line, xbt_getline() resizes it with realloc(), updating
538 * *buf and *n as necessary.
540 * In either case, on a successful call, *buf and *n will be updated to reflect
541 * the buffer address and allocated size respectively.
543 ssize_t xbt_getline(char **buf, size_t * n, FILE * stream)
545 #if !defined(SIMGRID_NEED_GETLINE)
546 return getline(buf, n, stream);
552 *buf = xbt_malloc(512);
557 return (ssize_t) - 1;
559 for (i = 0; (ch = fgetc(stream)) != EOF; i++) {
562 *buf = xbt_realloc(*buf, *n += 512);
566 if ((*buf)[i] == '\n') {
574 *buf = xbt_realloc(*buf, *n += 1);
583 * Diff related functions
585 * Implementation of the algorithm described in "An O(NP) Sequence Comparison
586 * Algorithm", by Sun Wu, Udi Manber, Gene Myers, and Webb Miller (Information
587 * Processing Letters 35(6):317-323, 1990), with the linear-space
588 * divide-and-conquer strategy described in "An O(ND) Difference Algorithm and
589 * Its Variations", by Eugene W. Myers (Algorithmica 1:251-266, 1986).
593 int x, y; /* starting coordinates */
594 int len; /* length */
598 void diff_snake(const char *vec_a[], int a0, int len_a,
599 const char *vec_b[], int b0, int len_b,
600 struct subsequence *seqs, int *fp, int k, int limit)
604 int fp_left = fp[k - 1] + 1;
605 int fp_right = fp[k + 1];
606 if (fp_left > fp_right) {
614 if (x + y <= limit) {
619 seqs[k] = seqs[record_seq];
621 while (x < len_a && y < len_b && !strcmp(vec_a[a0 + x], vec_b[b0 + y]))
625 seqs[k].len = x - seqs[k].x;
628 /* Returns the length of a shortest edit script, and a common
629 * subsequence from the middle.
631 static int diff_middle_subsequence(const char *vec_a[], int a0, int len_a,
632 const char *vec_b[], int b0, int len_b,
633 struct subsequence *subseq,
634 struct subsequence *seqs, int *fp)
636 const int delta = len_a - len_b;
637 const int limit = (len_a + len_b) / 2;
650 for (k = kmin; k <= kmax; k++)
654 fp[kmin - p - 1] = fp[kmax + p + 1] = -1;
655 for (k = kmax + p; k > delta; k--)
656 diff_snake(vec_a, a0, len_a, vec_b, b0, len_b, seqs, fp, k, limit);
657 for (k = kmin - p; k <= delta; k++)
658 diff_snake(vec_a, a0, len_a, vec_b, b0, len_b, seqs, fp, k, limit);
659 } while (fp[delta] != len_a);
661 subseq->x = a0 + seqs[delta].x;
662 subseq->y = b0 + seqs[delta].y;
663 subseq->len = seqs[delta].len;
664 return abs(delta) + 2 * p;;
667 /* Finds a longest common subsequence.
668 * Returns its length.
670 static int diff_compute_lcs(const char *vec_a[], int a0, int len_a,
671 const char *vec_b[], int b0, int len_b,
672 xbt_dynar_t common_sequence,
673 struct subsequence *seqs, int *fp)
675 if (len_a > 0 && len_b > 0) {
676 struct subsequence subseq;
677 int ses_len = diff_middle_subsequence(vec_a, a0, len_a, vec_b, b0, len_b,
679 int lcs_len = (len_a + len_b - ses_len) / 2;
682 } else if (ses_len > 1) {
683 int lcs_len1 = subseq.len;
684 if (lcs_len1 < lcs_len)
685 lcs_len1 += diff_compute_lcs(vec_a, a0, subseq.x - a0,
686 vec_b, b0, subseq.y - b0,
687 common_sequence, seqs, fp);
689 xbt_dynar_push(common_sequence, &subseq);
690 if (lcs_len1 < lcs_len) {
691 int u = subseq.x + subseq.len;
692 int v = subseq.y + subseq.len;
693 diff_compute_lcs(vec_a, u, a0 + len_a - u, vec_b, v, b0 + len_b - v,
694 common_sequence, seqs, fp);
697 int len = MIN(len_a, len_b) - subseq.len;
698 if (subseq.x == a0 && subseq.y == b0) {
700 xbt_dynar_push(common_sequence, &subseq);
702 struct subsequence subseq0 = {a0 + len_a - len,
703 b0 + len_b - len, len};
704 xbt_dynar_push(common_sequence, &subseq0);
708 struct subsequence subseq0 = {a0, b0, len};
709 xbt_dynar_push(common_sequence, &subseq0);
712 xbt_dynar_push(common_sequence, &subseq);
721 static int diff_member(const char *s, const char *vec[], int from, int to)
723 for ( ; from < to ; from++)
724 if (!strcmp(s, vec[from]))
729 /* Extract common prefix.
731 static void diff_easy_prefix(const char *vec_a[], int *a0_p, int *len_a_p,
732 const char *vec_b[], int *b0_p, int *len_b_p,
733 xbt_dynar_t common_sequence)
737 int len_a = *len_a_p;
738 int len_b = *len_b_p;
740 while (len_a > 0 && len_b > 0) {
741 struct subsequence subseq = {a0, b0, 0};
742 while (len_a > 0 && len_b > 0 && !strcmp(vec_a[a0], vec_b[b0])) {
748 xbt_dynar_push(common_sequence, &subseq);
749 if (len_a > 0 && len_b > 0 &&
750 !diff_member(vec_a[a0], vec_b, b0 + 1, b0 + len_b)) {
763 /* Extract common suffix.
765 static void diff_easy_suffix(const char *vec_a[], int *a0_p, int *len_a_p,
766 const char *vec_b[], int *b0_p, int *len_b_p,
767 xbt_dynar_t common_suffix)
771 int len_a = *len_a_p;
772 int len_b = *len_b_p;
774 while (len_a > 0 && len_b > 0){
775 struct subsequence subseq;
777 while (len_a > 0 && len_b > 0 &&
778 !strcmp(vec_a[a0 + len_a - 1], vec_b[b0 + len_b - 1])) {
783 if (subseq.len > 0) {
784 subseq.x = a0 + len_a;
785 subseq.y = b0 + len_b;
786 xbt_dynar_push(common_suffix, &subseq);
788 if (len_a > 0 && len_b > 0 &&
789 !diff_member(vec_b[b0 + len_b - 1], vec_a, a0, a0 + len_a - 1)) {
802 /** @brief Compute the unified diff of two strings */
803 char *xbt_str_diff(const char *a, const char *b)
805 xbt_dynar_t da = xbt_str_split(a, "\n");
806 xbt_dynar_t db = xbt_str_split(b, "\n");
807 xbt_dynar_t common_sequence, common_suffix;
809 const char **vec_a, **vec_b;
814 struct subsequence *seqs_base, *seqs;
815 struct subsequence subseq;
821 /* Clean empty lines at the end of da and db */
823 if (len > 0 && a[len - 1] == '\n')
824 xbt_dynar_pop(da, NULL);
826 if (len > 0 && b[len - 1] == '\n')
827 xbt_dynar_pop(db, NULL);
829 /* Various initializations */
830 /* Assume that dynar's content is contiguous */
832 len_a = xbt_dynar_length(da);
833 vec_a = len_a ? xbt_dynar_get_ptr(da, 0) : NULL;
835 len_b = xbt_dynar_length(db);
836 vec_b = len_b ? xbt_dynar_get_ptr(db, 0) : NULL;
837 max = MAX(len_a, len_b) + 1;
838 fp_base = xbt_new(int, 2 * max + 1);
839 fp = fp_base + max; /* indexes in [-max..max] */
840 seqs_base = xbt_new(struct subsequence, 2 * max + 1);
841 seqs = seqs_base + max; /* indexes in [-max..max] */
842 common_sequence = xbt_dynar_new(sizeof(struct subsequence), NULL);
843 common_suffix = xbt_dynar_new(sizeof(struct subsequence), NULL);
845 /* Add a sentinel a the end of the sequence */
849 xbt_dynar_push(common_suffix, &subseq);
851 /* Compute the Longest Common Subsequence */
852 diff_easy_prefix(vec_a, &a0, &len_a, vec_b, &b0, &len_b, common_sequence);
853 diff_easy_suffix(vec_a, &a0, &len_a, vec_b, &b0, &len_b, common_suffix);
854 diff_compute_lcs(vec_a, a0, len_a, vec_b, b0, len_b, common_sequence, seqs, fp);
855 while (!xbt_dynar_is_empty(common_suffix)) {
856 xbt_dynar_pop(common_suffix, &subseq);
857 xbt_dynar_push(common_sequence, &subseq);
860 /* Build a Shortest Edit Script, and the final result */
861 diff = xbt_dynar_new(sizeof(char *), &xbt_free_ref);
864 xbt_dynar_foreach(common_sequence, s, subseq) {
865 while (x < subseq.x) {
866 char *topush = bprintf("- %s", vec_a[x++]);
867 xbt_dynar_push_as(diff, char*, topush);
869 while (y < subseq.y) {
870 char *topush = bprintf("+ %s", vec_b[y++]);
871 xbt_dynar_push_as(diff, char*, topush);
873 while (x < subseq.x + subseq.len) {
874 char *topush = bprintf(" %s", vec_a[x++]);
875 xbt_dynar_push_as(diff, char*, topush);
879 res = xbt_str_join(diff, "\n");
885 xbt_dynar_free(&common_sequence);
886 xbt_dynar_free(&common_suffix);
887 xbt_dynar_free(&diff);
893 /** @brief creates a new string containing what can be read on a fd
896 char *xbt_str_from_file(FILE * file)
898 xbt_strbuff_t buff = xbt_strbuff_new();
901 memset(bread, 0, 1024);
903 while (!feof(file)) {
904 int got = fread(bread, 1, 1023, file);
906 xbt_strbuff_append(buff, bread);
910 xbt_strbuff_free_container(buff);
914 /* @brief Retrun 1 if string 'str' starts with string 'start'
916 * \param str a string
917 * \param start the string to search in str
919 * \return 1 if 'str' starts with 'start'
921 int xbt_str_start_with(const char* str, const char* start)
924 size_t l_str = strlen(str);
925 size_t l_start = strlen(start);
927 if(l_start > l_str) return 0;
929 for(i = 0; i< l_start; i++){
930 if(str[i] != start[i]) return 0;
939 #define mytest(name, input, expected) \
940 xbt_test_add(name); \
941 d=xbt_str_split_quoted(input); \
942 s=xbt_str_join(d,"XXX"); \
943 xbt_test_assert(!strcmp(s,expected),\
944 "Input (%s) leads to (%s) instead of (%s)", \
949 XBT_TEST_SUITE("xbt_str", "String Handling");
950 XBT_TEST_UNIT("xbt_str_split_quoted", test_split_quoted, "test the function xbt_str_split_quoted")
955 mytest("Empty", "", "");
956 mytest("Basic test", "toto tutu", "totoXXXtutu");
957 mytest("Useless backslashes", "\\t\\o\\t\\o \\t\\u\\t\\u",
959 mytest("Protected space", "toto\\ tutu", "toto tutu");
960 mytest("Several spaces", "toto tutu", "totoXXXtutu");
961 mytest("LTriming", " toto tatu", "totoXXXtatu");
962 mytest("Triming", " toto tutu ", "totoXXXtutu");
963 mytest("Single quotes", "'toto tutu' tata", "toto tutuXXXtata");
964 mytest("Double quotes", "\"toto tutu\" tata", "toto tutuXXXtata");
965 mytest("Mixed quotes", "\"toto' 'tutu\" tata", "toto' 'tutuXXXtata");
966 mytest("Backslashed quotes", "\\'toto tutu\\' tata",
967 "'totoXXXtutu'XXXtata");
968 mytest("Backslashed quotes + quotes", "'toto \\'tutu' tata",
969 "toto 'tutuXXXtata");
973 #define mytest_str(name, input, separator, expected) \
974 xbt_test_add(name); \
975 d=xbt_str_split_str(input, separator); \
976 s=xbt_str_join(d,"XXX"); \
977 xbt_test_assert(!strcmp(s,expected),\
978 "Input (%s) leads to (%s) instead of (%s)", \
983 XBT_TEST_UNIT("xbt_str_split_str", test_split_str, "test the function xbt_str_split_str")
988 mytest_str("Empty string and separator", "", "", "");
989 mytest_str("Empty string", "", "##", "");
990 mytest_str("Empty separator", "toto", "", "toto");
991 mytest_str("String with no separator in it", "toto", "##", "toto");
992 mytest_str("Basic test", "toto##tutu", "##", "totoXXXtutu");
995 /* Last args are format string and parameters for xbt_test_add */
996 #define mytest_diff(s1, s2, diff, ...) \
998 char *mytest_diff_res; \
999 xbt_test_add(__VA_ARGS__); \
1000 mytest_diff_res = xbt_str_diff(s1, s2); \
1001 xbt_test_assert(!strcmp(mytest_diff_res, diff), \
1002 "Wrong output:\n--- got:\n%s\n--- expected:\n%s\n---", \
1003 mytest_diff_res, diff); \
1004 free(mytest_diff_res); \
1007 XBT_TEST_UNIT("xbt_str_diff", test_diff, "test the function xbt_str_diff")
1012 mytest_diff("a", "a", " a", "1 word, no difference");
1013 mytest_diff("a", "A", "- a\n+ A", "1 word, different");
1014 mytest_diff("a\n", "a\n", " a", "1 line, no difference");
1015 mytest_diff("a\n", "A\n", "- a\n+ A", "1 line, different");
1018 mytest_diff("", "", "", "empty strings");
1019 mytest_diff("", "a", "+ a", "1 word, added");
1020 mytest_diff("a", "", "- a", "1 word, removed");
1021 mytest_diff("", "a\n", "+ a", "1 line, added");
1022 mytest_diff("a\n", "", "- a", "1 line, removed");
1023 mytest_diff("", "a\nb\nc\n", "+ a\n+ b\n+ c", "4 lines, all added");
1024 mytest_diff("a\nb\nc\n", "", "- a\n- b\n- c", "4 lines, all removed");
1027 mytest_diff("\n", "\n", " ", "empty lines");
1028 mytest_diff("", "\n", "+ ", "empty line, added");
1029 mytest_diff("\n", "", "- ", "empty line, removed");
1031 mytest_diff("a", "\na", "+ \n a", "empty line added before word");
1032 mytest_diff("a", "a\n\n", " a\n+ ", "empty line added after word");
1033 mytest_diff("\na", "a", "- \n a", "empty line removed before word");
1034 mytest_diff("a\n\n", "a", " a\n- ", "empty line removed after word");
1036 mytest_diff("a\n", "\na\n", "+ \n a", "empty line added before line");
1037 mytest_diff("a\n", "a\n\n", " a\n+ ", "empty line added after line");
1038 mytest_diff("\na\n", "a\n", "- \n a", "empty line removed before line");
1039 mytest_diff("a\n\n", "a\n", " a\n- ", "empty line removed after line");
1041 mytest_diff("a\nb\nc\nd\n", "\na\nb\nc\nd\n", "+ \n a\n b\n c\n d",
1042 "empty line added before 4 lines");
1043 mytest_diff("a\nb\nc\nd\n", "a\nb\nc\nd\n\n", " a\n b\n c\n d\n+ ",
1044 "empty line added after 4 lines");
1045 mytest_diff("\na\nb\nc\nd\n", "a\nb\nc\nd\n", "- \n a\n b\n c\n d",
1046 "empty line removed before 4 lines");
1047 mytest_diff("a\nb\nc\nd\n\n", "a\nb\nc\nd\n", " a\n b\n c\n d\n- ",
1048 "empty line removed after 4 lines");
1050 /* Missing newline at the end of one of the strings */
1051 mytest_diff("a\n", "a", " a", "1 line, 1 word, no difference");
1052 mytest_diff("a", "a\n", " a", "1 word, 1 line, no difference");
1053 mytest_diff("a\n", "A", "- a\n+ A", "1 line, 1 word, different");
1054 mytest_diff("a", "A\n", "- a\n+ A", "1 word, 1 line, different");
1056 mytest_diff("a\nb\nc\nd", "a\nb\nc\nd\n", " a\n b\n c\n d",
1057 "4 lines, no newline on first");
1058 mytest_diff("a\nb\nc\nd\n", "a\nb\nc\nd", " a\n b\n c\n d",
1059 "4 lines, no newline on second");
1061 /* Four lines, all combinations of differences */
1062 for (i = 0 ; i < (1U << 4) ; i++) {
1065 char res[4 * 8 + 1];
1072 for (/* j */ ; j < 4 && !(i & (1U << j)) ; j++) {
1074 ps += sprintf(ps, "%c\n", "abcd"[j]);
1075 pr += sprintf(pr, " %c\n", "abcd"[j]);
1077 for (k = j ; k < 4 && (i & (1U << k)) ; k++) {
1079 ps += sprintf(ps, "%c\n", "ABCD"[k]);
1080 pr += sprintf(pr, "- %c\n", "abcd"[k]);
1082 for (/* j */ ; j < k ; j++) {
1083 pr += sprintf(pr, "+ %c\n", "ABCD"[j]);
1087 *--pr = '\0'; /* strip last '\n' from expected result */
1088 mytest_diff("a\nb\nc\nd\n", s2, res,
1089 "compare (abcd) with changed (%s)", d2);
1092 /* Subsets of four lines, do not test for empty subset */
1093 for (i = 1 ; i < (1U << 4) ; i++) {
1096 char res[4 * 8 + 1];
1102 for (/* j */ ; j < 4 && (i & (1U << j)) ; j++) {
1104 ps += sprintf(ps, "%c\n", "abcd"[j]);
1105 pr += sprintf(pr, " %c\n", "abcd"[j]);
1107 for (/* j */; j < 4 && !(i & (1U << j)) ; j++) {
1108 pr += sprintf(pr, "- %c\n", "abcd"[j]);
1112 *--pr = '\0'; /* strip last '\n' from expected result */
1113 mytest_diff("a\nb\nc\nd\n", s2, res,
1114 "compare (abcd) with subset (%s)", d2);
1116 for (pr = res ; *pr != '\0' ; pr++)
1119 mytest_diff(s2, "a\nb\nc\nd\n", res,
1120 "compare subset (%s) with (abcd)", d2);
1124 #endif /* SIMGRID_TEST */