Rename StringUtils.[ch] to XUtils.[ch]

XUtils.c

@@ -0,0 +1,179 @@
+/*
+htop - StringUtils.c
+(C) 2004-2011 Hisham H. Muhammad
+Released under the GNU GPLv2, see the COPYING file
+in the source distribution for its full text.
+*/
+
+#include "config.h"
+
+#include "XUtils.h"
+
+#include <stdarg.h>
+#include <stdlib.h>
+#include <string.h>
+#include <strings.h>
+
+#include "XAlloc.h"
+
+
+char* String_cat(const char* s1, const char* s2) {
+   int l1 = strlen(s1);
+   int l2 = strlen(s2);
+   char* out = xMalloc(l1 + l2 + 1);
+   memcpy(out, s1, l1);
+   memcpy(out+l1, s2, l2+1);
+   out[l1 + l2] = '\0';
+   return out;
+}
+
+char* String_trim(const char* in) {
+   while (in[0] == ' ' || in[0] == '\t' || in[0] == '\n') {
+      in++;
+   }
+   int len = strlen(in);
+   while (len > 0 && (in[len-1] == ' ' || in[len-1] == '\t' || in[len-1] == '\n')) {
+      len--;
+   }
+   char* out = xMalloc(len+1);
+   strncpy(out, in, len);
+   out[len] = '\0';
+   return out;
+}
+
+inline int String_eq(const char* s1, const char* s2) {
+   if (s1 == NULL || s2 == NULL) {
+      if (s1 == NULL && s2 == NULL)
+         return 1;
+      else
+         return 0;
+   }
+   return (strcmp(s1, s2) == 0);
+}
+
+char** String_split(const char* s, char sep, int* n) {
+   *n = 0;
+   const int rate = 10;
+   char** out = xCalloc(rate, sizeof(char*));
+   int ctr = 0;
+   int blocks = rate;
+   char* where;
+   while ((where = strchr(s, sep)) != NULL) {
+      int size = where - s;
+      char* token = xMalloc(size + 1);
+      strncpy(token, s, size);
+      token[size] = '\0';
+      out[ctr] = token;
+      ctr++;
+      if (ctr == blocks) {
+         blocks += rate;
+         out = (char**) xRealloc(out, sizeof(char*) * blocks);
+      }
+      s += size + 1;
+   }
+   if (s[0] != '\0') {
+      out[ctr] = xStrdup(s);
+      ctr++;
+   }
+   out = xRealloc(out, sizeof(char*) * (ctr + 1));
+   out[ctr] = NULL;
+   *n = ctr;
+   return out;
+}
+
+void String_freeArray(char** s) {
+   if (!s) {
+      return;
+   }
+   for (int i = 0; s[i] != NULL; i++) {
+      free(s[i]);
+   }
+   free(s);
+}
+
+char* String_getToken(const char* line, const unsigned short int numMatch) {
+   const unsigned short int len = strlen(line);
+   char inWord = 0;
+   unsigned short int count = 0;
+   char match[50];
+
+   unsigned short int foundCount = 0;
+
+   for (unsigned short int i = 0; i < len; i++) {
+      char lastState = inWord;
+      inWord = line[i] == ' ' ? 0:1;
+
+      if (lastState == 0 && inWord == 1)
+         count++;
+
+      if(inWord == 1){
+         if (count == numMatch && line[i] != ' ' && line[i] != '\0' && line[i] != '\n' && line[i] != (char)EOF) {
+            match[foundCount] = line[i];
+            foundCount++;
+         }
+      }
+   }
+
+   match[foundCount] = '\0';
+   return xStrdup(match);
+}
+
+char* String_readLine(FILE* fd) {
+   const int step = 1024;
+   int bufSize = step;
+   char* buffer = xMalloc(step + 1);
+   char* at = buffer;
+   for (;;) {
+      char* ok = fgets(at, step + 1, fd);
+      if (!ok) {
+         free(buffer);
+         return NULL;
+      }
+      char* newLine = strrchr(at, '\n');
+      if (newLine) {
+         *newLine = '\0';
+         return buffer;
+      } else {
+         if (feof(fd)) {
+            return buffer;
+         }
+      }
+      bufSize += step;
+      buffer = xRealloc(buffer, bufSize + 1);
+      at = buffer + bufSize - step;
+   }
+}
+
+int xAsprintf(char** strp, const char* fmt, ...) {
+   va_list vl;
+   va_start(vl, fmt);
+   int r = vasprintf(strp, fmt, vl);
+   va_end(vl);
+
+   if (r < 0 || !*strp) {
+      fail();
+   }
+
+   return r;
+}
+
+int xSnprintf(char* buf, int len, const char* fmt, ...) {
+   va_list vl;
+   va_start(vl, fmt);
+   int n = vsnprintf(buf, len, fmt, vl);
+   va_end(vl);
+
+   if (n < 0 || n >= len) {
+      fail();
+   }
+
+   return n;
+}
+
+char* xStrdup(const char* str) {
+   char* data = strdup(str);
+   if (!data) {
+      fail();
+   }
+   return data;
+}