diff options
Diffstat (limited to 'stpntolower.c')
| -rw-r--r-- | stpntolower.c | 115 |
1 files changed, 115 insertions, 0 deletions
diff --git a/stpntolower.c b/stpntolower.c new file mode 100644 index 0000000..9fc4466 --- /dev/null +++ b/stpntolower.c @@ -0,0 +1,115 @@ +/* See LICENSE file for copyright and license details. */ +#include "libsimple.h" +#ifndef TEST + + +char * +libsimple_stpntolower(char *d, const char *s, size_t n) /* TODO man */ +{ + size_t i; + char *ret; + if (d == s) { + for (; n && *d; d++, n--) + *d = tolower(*d); + return d; + } else if (d < s) { + for (; n && *s; d++, s++, n--) + *d = tolower(*s); + if (n) + *d = '\0'; + return d; + } else { + for (i = 0; i < n && s[i]; i++); + ret = &d[i]; + if (i != n) + d[i] = tolower(s[i]); + while (i--) + d[i] = tolower(s[i]); + return ret; + } +} + + +#else +#include "test.h" + +int +main(void) +{ + char buf[100]; + + stpcpy(buf, "ABCDEabcde12345"); + assert(!strcmpnul(libsimple_stpntolower(&buf[3], &buf[0], SIZE_MAX), "")); + assert(!strcmp(buf, "ABCabcdeabcde12345")); + stpcpy(buf, "ABCDEabcde12345"); + assert(!strcmpnul(libsimple_stpntolower(&buf[0], &buf[3], SIZE_MAX), "")); + assert(!strcmp(buf, "deabcde12345")); + stpcpy(buf, "ABCDEabcde12345"); + assert(!strcmpnul(libsimple_stpntolower(&buf[0], &buf[0], SIZE_MAX), "")); + assert(!strcmp(buf, "abcdeabcde12345")); + stpcpy(buf, "ABCDEabcde12345"); + assert(!strcmpnul(libsimple_strntolower(&buf[3], &buf[0], SIZE_MAX), "abcdeabcde12345")); + assert(!strcmp(buf, "ABCabcdeabcde12345")); + stpcpy(buf, "ABCDEabcde12345"); + assert(!strcmpnul(libsimple_strntolower(&buf[0], &buf[3], SIZE_MAX), "deabcde12345")); + assert(!strcmp(buf, "deabcde12345")); + stpcpy(buf, "ABCDEabcde12345"); + assert(!strcmpnul(libsimple_strntolower(&buf[0], &buf[0], SIZE_MAX), "abcdeabcde12345")); + assert(!strcmp(buf, "abcdeabcde12345")); + + memset(buf, 0, sizeof(buf)); + stpcpy(buf, "ABCDEabcde12345"); + buf[18] = 'X'; + assert(!strcmpnul(libsimple_stpntolower(&buf[3], &buf[0], 15), "X")); + assert(!strcmp(buf, "ABCabcdeabcde12345X")); + memset(buf, 0, sizeof(buf)); + stpcpy(buf, "ABCDEabcde12345"); + assert(!strcmpnul(libsimple_stpntolower(&buf[0], &buf[3], 12), "345")); + assert(!strcmp(buf, "deabcde12345345")); + memset(buf, 0, sizeof(buf)); + stpcpy(buf, "ABCDEabcde12345X"); + assert(!strcmpnul(libsimple_stpntolower(&buf[0], &buf[0], 15), "X")); + assert(!strcmp(buf, "abcdeabcde12345X")); + memset(buf, 0, sizeof(buf)); + stpcpy(buf, "ABCDEabcde12345"); + buf[18] = 'X'; + assert(!strcmpnul(libsimple_strntolower(&buf[3], &buf[0], 15), "abcdeabcde12345X")); + assert(!strcmp(buf, "ABCabcdeabcde12345X")); + memset(buf, 0, sizeof(buf)); + stpcpy(buf, "ABCDEabcde12345"); + assert(!strcmpnul(libsimple_strntolower(&buf[0], &buf[3], 12), "deabcde12345345")); + assert(!strcmp(buf, "deabcde12345345")); + memset(buf, 0, sizeof(buf)); + stpcpy(buf, "ABCDEabcde12345X"); + assert(!strcmpnul(libsimple_strntolower(&buf[0], &buf[0], 15), "abcdeabcde12345X")); + assert(!strcmp(buf, "abcdeabcde12345X")); + + memset(buf, 0, sizeof(buf)); + stpcpy(buf, "ABCDEabcde12345"); + assert(!strcmpnul(libsimple_stpntolower(&buf[3], &buf[0], 0), "DEabcde12345")); + assert(!strcmp(buf, "ABCDEabcde12345")); + memset(buf, 0, sizeof(buf)); + stpcpy(buf, "ABCDEabcde12345"); + assert(!strcmpnul(libsimple_stpntolower(&buf[0], &buf[3], 0), "ABCDEabcde12345")); + assert(!strcmp(buf, "ABCDEabcde12345")); + memset(buf, 0, sizeof(buf)); + stpcpy(buf, "ABCDEabcde12345"); + assert(!strcmpnul(libsimple_stpntolower(&buf[0], &buf[0], 0), "ABCDEabcde12345")); + assert(!strcmp(buf, "ABCDEabcde12345")); + memset(buf, 0, sizeof(buf)); + stpcpy(buf, "ABCDEabcde12345"); + assert(!strcmpnul(libsimple_strntolower(&buf[3], &buf[0], 0), "DEabcde12345")); + assert(!strcmp(buf, "ABCDEabcde12345")); + memset(buf, 0, sizeof(buf)); + stpcpy(buf, "ABCDEabcde12345"); + assert(!strcmpnul(libsimple_strntolower(&buf[0], &buf[3], 0), "ABCDEabcde12345")); + assert(!strcmp(buf, "ABCDEabcde12345")); + memset(buf, 0, sizeof(buf)); + stpcpy(buf, "ABCDEabcde12345"); + assert(!strcmpnul(libsimple_strntolower(&buf[0], &buf[0], 0), "ABCDEabcde12345")); + assert(!strcmp(buf, "ABCDEabcde12345")); + + return 0; +} + +#endif |