Rename String to StringUtils.

Fixes building on case-insensitive filesystems where String.h gets confused with <string.h>.

From d734dacea0a10d0465dad4e95b3421511e7da112 Mon Sep 17 00:00:00 2001
From: David Hunt <dhunt@iolanthe.attlocal.net>
Date: Sat, 11 Jul 2015 20:56:31 -0500
Subject: [PATCH 1/8] Rename String to StringUtils

StringUtils.c

@@ -0,0 +1,129 @@
+/*
+htop - String.c
+(C) 2004-2011 Hisham H. Muhammad
+Released under the GNU GPL, see the COPYING file
+in the source distribution for its full text.
+*/
+
+#include "StringUtils.h"
+
+#include "config.h"
+
+#include <string.h>
+#include <strings.h>
+#include <stdlib.h>
+#include <stdio.h>
+
+/*{
+#define String_startsWith(s, match) (strstr((s), (match)) == (s))
+#define String_contains_i(s1, s2) (strcasestr(s1, s2) != NULL)
+}*/
+
+char* String_cat(const char* s1, const char* s2) {
+   int l1 = strlen(s1);
+   int l2 = strlen(s2);
+   char* out = malloc(l1 + l2 + 1);
+   strncpy(out, s1, l1);
+   strncpy(out+l1, s2, l2+1);
+   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 = malloc(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 = (char**) malloc(sizeof(char*) * rate);
+   int ctr = 0;
+   int blocks = rate;
+   char* where;
+   while ((where = strchr(s, sep)) != NULL) {
+      int size = where - s;
+      char* token = (char*) malloc(size + 1);
+      strncpy(token, s, size);
+      token[size] = '\0';
+      out[ctr] = token;
+      ctr++;
+      if (ctr == blocks) {
+         blocks += rate;
+         char** newOut = (char**) realloc(out, sizeof(char*) * blocks);
+         if (newOut) {
+            out = newOut;
+         } else {
+            blocks -= rate;
+            break;
+         }
+      }
+      s += size + 1;
+   }
+   if (s[0] != '\0') {
+      int size = strlen(s);
+      char* token = (char*) malloc(size + 1);
+      strncpy(token, s, size + 1);
+      out[ctr] = token;
+      ctr++;
+   }
+   char** newOut = realloc(out, sizeof(char*) * (ctr + 1));
+   if (newOut) {
+      out = newOut;
+   }
+   out[ctr] = NULL;
+   *n = ctr;
+   return out;
+}
+
+void String_freeArray(char** s) {
+   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((char*)strdup(match));
+}