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<hr><h1>utilstr.cpp</h1><div class="fragment"><pre>00001 <font class="preprocessor">#include <string.h></font>
00002 <font class="preprocessor">#include <utilstr.h></font>
00003 <font class="preprocessor">#include <ctype.h></font>
00004
00005 <font class="comment">/******************************************************************************</font>
00006 <font class="comment"> * stdstr - Sets/gets a string</font>
00007 <font class="comment"> *</font>
00008 <font class="comment"> * ENT: ipstr - pointer to a string pointer to set if necessary</font>
00009 <font class="comment"> * istr - string to set to *ipstr</font>
00010 <font class="comment"> * 0 - only get</font>
00011 <font class="comment"> *</font>
00012 <font class="comment"> * RET: *ipstr</font>
00013 <font class="comment"> */</font>
00014
00015 <font class="keywordtype">char</font> *stdstr(<font class="keywordtype">char</font> **ipstr, <font class="keyword">const</font> <font class="keywordtype">char</font> *istr) {
00016 <font class="keywordflow">if</font> (istr) {
00017 <font class="keywordflow">if</font> (*ipstr)
00018 <font class="keyword">delete</font> [] *ipstr;
00019 <font class="keywordtype">int</font> len = strlen(istr) + 1;
00020 *ipstr = <font class="keyword">new</font> <font class="keywordtype">char</font> [ len ];
00021 memcpy(*ipstr, istr, len);
00022 }
00023 <font class="keywordflow">return</font> *ipstr;
00024 }
00025
00026
00027 <font class="comment">/******************************************************************************</font>
00028 <font class="comment"> * strstrip - Removes leading and trailing spaces from a string</font>
00029 <font class="comment"> *</font>
00030 <font class="comment"> * ENT: istr - string pointer to strip</font>
00031 <font class="comment"> *</font>
00032 <font class="comment"> * RET: *istr</font>
00033 <font class="comment"> */</font>
00034
00035 <font class="keywordtype">char</font> *strstrip(<font class="keywordtype">char</font> *istr) {
00036 <font class="keywordtype">char</font> *tmp = istr;
00037 <font class="keywordtype">char</font> *rtmp;
00038
00039 <font class="keywordtype">int</font> len = strlen(istr);
00040 <font class="keywordflow">if</font> (len < 1)
00041 <font class="keywordflow">return</font> istr;
00042 rtmp = istr + (len - 1);
00043
00044 <font class="keywordflow">while</font> ((*rtmp == <font class="charliteral">' '</font>)||(*rtmp == <font class="charliteral">'\t'</font>)||(*rtmp == 10)||(*rtmp == 13)) *(rtmp--) = 0;
00045 <font class="keywordflow">while</font> ((*tmp == <font class="charliteral">' '</font>)||(*tmp == <font class="charliteral">'\t'</font>)||(*tmp == 10)||(*tmp == 13)) tmp++;
00046 memmove(istr, tmp, (rtmp - tmp) + 1);
00047 istr[(rtmp - tmp) + 1] = 0;
00048
00049 <font class="keywordflow">return</font> istr;
00050 }
00051
00052
00053 <font class="comment">/******************************************************************************</font>
00054 <font class="comment"> * stristr - Scans a string for the occurrence of a given substring, no case</font>
00055 <font class="comment"> *</font>
00056 <font class="comment"> * ENT: scans s1 for the first occurrence of the substring s2, ingnoring case</font>
00057 <font class="comment"> *</font>
00058 <font class="comment"> * RET: a pointer to the element in s1, where s2 begins (points to s2 in s1).</font>
00059 <font class="comment"> * If s2 does not occur in s1, returns null.</font>
00060 <font class="comment"> */</font>
00061
00062 <font class="keyword">const</font> <font class="keywordtype">char</font> *stristr(<font class="keyword">const</font> <font class="keywordtype">char</font> *s1, <font class="keyword">const</font> <font class="keywordtype">char</font> *s2) {
00063 <font class="keywordtype">int</font> tLen = strlen(s2);
00064 <font class="keywordtype">int</font> cLen = strlen(s1);
00065 <font class="keywordtype">char</font> *target = <font class="keyword">new</font> <font class="keywordtype">char</font> [ tLen + 1 ];
00066 <font class="keywordtype">int</font> i, j;
00067 <font class="keyword">const</font> <font class="keywordtype">char</font> *retVal = 0;
00068
00069 strcpy(target, s2);
00070 <font class="keywordflow">for</font> (i = 0; i < tLen; i++)
00071 target[i] = SW_toupper(target[i]);
00072
00073 <font class="keywordflow">for</font> (i = 0; i < (cLen - tLen)+1; i++) {
00074 <font class="keywordflow">if</font> (SW_toupper(s1[i]) == (<font class="keywordtype">unsigned</font> <font class="keywordtype">char</font>)*target) {
00075 <font class="keywordflow">for</font> (j = 1; j < tLen; j++) {
00076 <font class="keywordflow">if</font> (SW_toupper(s1[i+j]) != (<font class="keywordtype">unsigned</font> <font class="keywordtype">char</font>)target[j])
00077 <font class="keywordflow">break</font>;
00078 }
00079 <font class="keywordflow">if</font> (j == tLen) {
00080 retVal = s1+i;
00081 <font class="keywordflow">break</font>;
00082 }
00083 }
00084 }
00085 <font class="keyword">delete</font> [] target;
00086 <font class="keywordflow">return</font> retVal;
00087 }
00088
00089 <font class="comment">/******************************************************************************</font>
00090 <font class="comment"> * strnicmp - compares the first n bytes of 2 string ignoring case</font>
00091 <font class="comment"> *</font>
00092 <font class="comment"> * ENT: compares s1 to s2 comparing the first n byte ingnoring case</font>
00093 <font class="comment"> *</font>
00094 <font class="comment"> * RET: same as strcmp</font>
00095 <font class="comment"> */</font>
00096
00097 <font class="keyword">const</font> <font class="keywordtype">char</font> strnicmp(<font class="keyword">const</font> <font class="keywordtype">char</font> *s1, <font class="keyword">const</font> <font class="keywordtype">char</font> *s2, <font class="keywordtype">int</font> len) {
00098
00099 <font class="keywordtype">int</font> tLen = strlen(s2);
00100 <font class="keywordtype">int</font> cLen = strlen(s1);
00101 <font class="keywordtype">char</font> diff;
00102 <font class="keywordtype">int</font> i;
00103 <font class="keywordflow">for</font> (i = 0; ((i < len) && (i < tLen) && (i < cLen)); i++) {
00104 <font class="keywordflow">if</font> ((diff = SW_toupper(*s1) - SW_toupper(*s2)))
00105 <font class="keywordflow">return</font> diff;
00106 s1++;
00107 s2++;
00108 }
00109 <font class="keywordflow">return</font> (i < len) ? cLen - tLen : 0;
00110 }
00111
00112 <font class="comment">/******************************************************************************</font>
00113 <font class="comment"> * strlenw - Scans a string for trailing 0x0000 and return size in BYTES</font>
00114 <font class="comment"> *</font>
00115 <font class="comment"> * ENT: target - string for which to determine size</font>
00116 <font class="comment"> *</font>
00117 <font class="comment"> * RET: length in BYTES </font>
00118 <font class="comment"> * If s2 does not occur in s1, returns null.</font>
00119 <font class="comment"> */</font>
00120
00121 <font class="keywordtype">unsigned</font> <font class="keywordtype">int</font> strlenw(<font class="keyword">const</font> <font class="keywordtype">char</font> *s1) {
00122 <font class="keywordflow">return</font> strlen(s1);
00123 <font class="comment">// utf8 says no null in string except terminator, so below code is overkill</font>
00124 <font class="comment">/*</font>
00125 <font class="comment"> const char *ch = s1;</font>
00126 <font class="comment"> if (!*ch)</font>
00127 <font class="comment"> ch++;</font>
00128 <font class="comment"> while (*ch) {</font>
00129 <font class="comment"> ch++;</font>
00130 <font class="comment"> if (!*ch)</font>
00131 <font class="comment"> ch++;</font>
00132 <font class="comment"> }</font>
00133 <font class="comment"> return (unsigned int)(ch - s1) - 1;</font>
00134 <font class="comment">*/</font>
00135 }
00136
00137
00138 <font class="comment">/******************************************************************************</font>
00139 <font class="comment"> * toupperstr - converts a string to uppercase string</font>
00140 <font class="comment"> *</font>
00141 <font class="comment"> * ENT: target - string to convert</font>
00142 <font class="comment"> *</font>
00143 <font class="comment"> * RET: target</font>
00144 <font class="comment"> */</font>
00145
00146 <font class="keywordtype">char</font> *toupperstr(<font class="keywordtype">char</font> *buf) {
00147 <font class="keywordtype">char</font> *ret = buf;
00148 <font class="keywordflow">while</font> (*buf)
00149 *buf = SW_toupper(*buf++);
00150
00151 <font class="keywordflow">return</font> ret;
00152 }
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