--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/ucx/string.c Sat Dec 07 12:14:59 2013 +0100
@@ -0,0 +1,313 @@
+/*
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER.
+ *
+ * Copyright 2013 Olaf Wintermann. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ *
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
+ * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+ * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+ * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#include <stdlib.h>
+#include <string.h>
+#include <stdarg.h>
+
+#include "string.h"
+#include "allocator.h"
+
+sstr_t sstr(char *cstring) {
+ sstr_t string;
+ string.ptr = cstring;
+ string.length = strlen(cstring);
+ return string;
+}
+
+sstr_t sstrn(char *cstring, size_t length) {
+ sstr_t string;
+ string.ptr = cstring;
+ string.length = length;
+ return string;
+}
+
+size_t sstrnlen(size_t n, sstr_t s, ...) {
+ va_list ap;
+ size_t size = s.length;
+ va_start(ap, s);
+
+ for (size_t i = 1 ; i < n ; i++) {
+ sstr_t str = va_arg(ap, sstr_t);
+ size += str.length;
+ }
+ va_end(ap);
+
+ return size;
+}
+
+sstr_t sstrncat(sstr_t s, size_t n, sstr_t c1, ...) {
+ va_list ap;
+ va_start(ap, c1);
+ s.ptr[0] = 0;
+
+ size_t len = s.length;
+ size_t cplen = c1.length > len ? len : c1.length;
+ char *ptr = s.ptr;
+
+ memcpy(ptr, c1.ptr, cplen);
+ len -= cplen;
+ ptr += cplen;
+ for (size_t i = 1 ; i < n ; i++) {
+ sstr_t str = va_arg (ap, sstr_t);
+ cplen = str.length > len ? len : str.length;
+ if(cplen <= 0) {
+ va_end(ap);
+ return s;
+ }
+ memcpy(ptr, str.ptr, cplen);
+ len -= cplen;
+ ptr += cplen;
+ }
+ va_end(ap);
+ s.length = ptr - s.ptr;
+
+ return s;
+}
+
+sstr_t sstrsubs(sstr_t s, size_t start) {
+ return sstrsubsl (s, start, s.length-start);
+}
+
+sstr_t sstrsubsl(sstr_t s, size_t start, size_t length) {
+ sstr_t new_sstr;
+ if (start >= s.length) {
+ return s;
+ }
+ if (length > s.length-start) {
+ length = s.length-start;
+ }
+ new_sstr.ptr = &s.ptr[start];
+ new_sstr.length = length;
+ return new_sstr;
+}
+
+sstr_t sstrchr(sstr_t s, int c) {
+ for(size_t i=0;i<s.length;i++) {
+ if(s.ptr[i] == c) {
+ return sstrsubs(s, i);
+ }
+ }
+ sstr_t n;
+ n.ptr = NULL;
+ n.length = 0;
+ return n;
+}
+
+sstr_t sstrrchr(sstr_t s, int c) {
+ if (s.length > 0) {
+ for(size_t i=s.length;i>0;i--) {
+ if(s.ptr[i-1] == c) {
+ return sstrsubs(s, i-1);
+ }
+ }
+ }
+ sstr_t n;
+ n.ptr = NULL;
+ n.length = 0;
+ return n;
+}
+
+sstr_t* sstrsplit(sstr_t s, sstr_t d, size_t *n) {
+ return sstrsplit_a(ucx_default_allocator(), s, d, n);
+}
+
+sstr_t* sstrsplit_a(UcxAllocator *allocator, sstr_t s, sstr_t d, size_t *n) {
+ if (s.length == 0 || d.length == 0) {
+ *n = -1;
+ return NULL;
+ }
+
+ sstr_t* result;
+ size_t nmax = *n;
+ *n = 1;
+
+ /* special case: exact match - no processing needed */
+ if (sstrcmp(s, d) == 0) {
+ *n = 0;
+ return NULL;
+ }
+ sstr_t sv = sstrdup(s);
+ if (sv.length == 0) {
+ *n = -2;
+ return NULL;
+ }
+
+ for (size_t i = 0 ; i < s.length ; i++) {
+ if (sv.ptr[i] == d.ptr[0]) {
+ _Bool match = 1;
+ for (size_t j = 1 ; j < d.length ; j++) {
+ if (j+i < s.length) {
+ match &= (sv.ptr[i+j] == d.ptr[j]);
+ } else {
+ match = 0;
+ break;
+ }
+ }
+ if (match) {
+ (*n)++;
+ for (size_t j = 0 ; j < d.length ; j++) {
+ sv.ptr[i+j] = 0;
+ }
+ i += d.length;
+ }
+ }
+ if ((*n) == nmax) break;
+ }
+ result = (sstr_t*) allocator->malloc(allocator->pool, sizeof(sstr_t)*(*n));
+
+ if (result) {
+ char *pptr = sv.ptr;
+ for (size_t i = 0 ; i < *n ; i++) {
+ size_t l = strlen(pptr);
+ char* ptr = (char*) allocator->malloc(allocator->pool, l + 1);
+ memcpy(ptr, pptr, l);
+ ptr[l] = 0;
+
+ result[i] = sstrn(ptr, l);
+ pptr += l + d.length;
+ }
+ } else {
+ *n = -2;
+ }
+
+ free(sv.ptr);
+
+ return result;
+}
+
+int sstrcmp(sstr_t s1, sstr_t s2) {
+ if (s1.length == s2.length) {
+ return memcmp(s1.ptr, s2.ptr, s1.length);
+ } else if (s1.length > s2.length) {
+ return 1;
+ } else {
+ return -1;
+ }
+}
+
+int sstrcasecmp(sstr_t s1, sstr_t s2) {
+ if (s1.length == s2.length) {
+#ifdef _WIN32
+ return _strnicmp(s1.ptr, s2.ptr, s1.length);
+#else
+ return strncasecmp(s1.ptr, s2.ptr, s1.length);
+#endif
+ } else if (s1.length > s2.length) {
+ return 1;
+ } else {
+ return -1;
+ }
+}
+
+sstr_t sstrdup(sstr_t s) {
+ return sstrdup_a(ucx_default_allocator(), s);
+}
+
+sstr_t sstrdup_a(UcxAllocator *allocator, sstr_t s) {
+ sstr_t newstring;
+ newstring.ptr = (char*)allocator->malloc(allocator->pool, s.length + 1);
+ if (newstring.ptr) {
+ newstring.length = s.length;
+ newstring.ptr[newstring.length] = 0;
+
+ memcpy(newstring.ptr, s.ptr, s.length);
+ } else {
+ newstring.length = 0;
+ }
+
+ return newstring;
+}
+
+sstr_t sstrtrim(sstr_t string) {
+ sstr_t newstr = string;
+ if (string.length == 0) {
+ return newstr;
+ }
+
+ size_t i;
+ for(i=0;i<string.length;i++) {
+ char c = string.ptr[i];
+ if(c > 32) {
+ break;
+ }
+ }
+ newstr.ptr = &string.ptr[i];
+ newstr.length = string.length - i;
+
+ if(newstr.length == 0) {
+ return newstr;
+ }
+
+ i = newstr.length - 1;
+ for(;;) {
+ char c = newstr.ptr[i];
+ if(c > 32) {
+ break;
+ }
+ if(i > 0) {
+ i--;
+ } else {
+ break;
+ }
+ }
+ newstr.length = i + 1;
+
+ return newstr;
+}
+
+int sstrprefix(sstr_t string, sstr_t prefix) {
+ if (string.length == 0) {
+ return prefix.length == 0;
+ }
+ if (prefix.length == 0) {
+ return 1;
+ }
+
+ if (prefix.length > string.length) {
+ return 0;
+ } else {
+ return memcmp(string.ptr, prefix.ptr, prefix.length) == 0;
+ }
+}
+
+int sstrsuffix(sstr_t string, sstr_t suffix) {
+ if (string.length == 0) {
+ return suffix.length == 0;
+ }
+ if (suffix.length == 0) {
+ return 1;
+ }
+
+ if (suffix.length > string.length) {
+ return 0;
+ } else {
+ return memcmp(string.ptr+string.length-suffix.length,
+ suffix.ptr, suffix.length) == 0;
+ }
+}