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773 lines
16 KiB
C++
773 lines
16 KiB
C++
// This code is in the public domain -- Ignacio Castaño <castano@gmail.com>
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#include "StrLib.h"
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#include "Memory.h"
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#include "Utils.h" // swap
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#include <math.h> // log
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#include <stdio.h> // vsnprintf
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#include <string.h> // strlen, strcmp, etc.
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#if NV_CC_MSVC
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#include <stdarg.h> // vsnprintf
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#endif
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using namespace nv;
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namespace
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{
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static char * strAlloc(uint size)
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{
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return malloc<char>(size);
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}
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static char * strReAlloc(char * str, uint size)
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{
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return realloc<char>(str, size);
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}
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static void strFree(const char * str)
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{
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return free<char>(str);
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}
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/*static char * strDup( const char * str )
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{
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nvDebugCheck( str != NULL );
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uint len = uint(strlen( str ) + 1);
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char * dup = strAlloc( len );
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memcpy( dup, str, len );
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return dup;
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}*/
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// helper function for integer to string conversion.
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static char * i2a( uint i, char *a, uint r )
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{
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if( i / r > 0 ) {
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a = i2a( i / r, a, r );
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}
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*a = "0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZ"[i % r];
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return a + 1;
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}
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// Locale independent functions.
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static inline char toUpper( char c ) {
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return (c<'a' || c>'z') ? (c) : (c+'A'-'a');
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}
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static inline char toLower( char c ) {
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return (c<'A' || c>'Z') ? (c) : (c+'a'-'A');
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}
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static inline bool isAlpha( char c ) {
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return (c>='a' && c<='z') || (c>='A' && c<='Z');
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}
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static inline bool isDigit( char c ) {
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return c>='0' && c<='9';
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}
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static inline bool isAlnum( char c ) {
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return (c>='a' && c<='z') || (c>='A' && c<='Z') || (c>='0' && c<='9');
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}
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}
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uint nv::strLen(const char * str)
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{
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nvDebugCheck(str != NULL);
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return U32(strlen(str));
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}
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int nv::strDiff(const char * s1, const char * s2)
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{
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nvDebugCheck(s1 != NULL);
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nvDebugCheck(s2 != NULL);
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return strcmp(s1, s2);
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}
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int nv::strCaseDiff(const char * s1, const char * s2)
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{
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nvDebugCheck(s1 != NULL);
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nvDebugCheck(s1 != NULL);
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#if NV_CC_MSVC
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return _stricmp(s1, s2);
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#else
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return strcasecmp(s1, s2);
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#endif
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}
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bool nv::strEqual(const char * s1, const char * s2)
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{
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if (s1 == s2) return true;
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if (s1 == NULL || s2 == NULL) return false;
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return strcmp(s1, s2) == 0;
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}
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bool nv::strCaseEqual(const char * s1, const char * s2)
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{
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if (s1 == s2) return true;
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if (s1 == NULL || s2 == NULL) return false;
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return strCaseDiff(s1, s2) == 0;
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}
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bool nv::strBeginsWith(const char * str, const char * prefix)
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{
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//return strstr(str, prefix) == dst;
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return strncmp(str, prefix, strlen(prefix)) == 0;
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}
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bool nv::strEndsWith(const char * str, const char * suffix)
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{
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uint ml = strLen(str);
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uint sl = strLen(suffix);
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if (ml < sl) return false;
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return strncmp(str + ml - sl, suffix, sl) == 0;
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}
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// @@ Add asserts to detect overlap between dst and src?
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void nv::strCpy(char * dst, uint size, const char * src)
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{
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nvDebugCheck(dst != NULL);
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nvDebugCheck(src != NULL);
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#if NV_CC_MSVC && _MSC_VER >= 1400
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strcpy_s(dst, size, src);
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#else
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NV_UNUSED(size);
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strcpy(dst, src);
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#endif
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}
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void nv::strCpy(char * dst, uint size, const char * src, uint len)
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{
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nvDebugCheck(dst != NULL);
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nvDebugCheck(src != NULL);
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#if NV_CC_MSVC && _MSC_VER >= 1400
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strncpy_s(dst, size, src, len);
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#else
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int n = min(len+1, size);
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strncpy(dst, src, n);
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dst[n-1] = '\0';
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#endif
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}
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void nv::strCat(char * dst, uint size, const char * src)
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{
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nvDebugCheck(dst != NULL);
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nvDebugCheck(src != NULL);
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#if NV_CC_MSVC && _MSC_VER >= 1400
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strcat_s(dst, size, src);
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#else
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NV_UNUSED(size);
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strcat(dst, src);
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#endif
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}
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NVCORE_API const char * nv::strSkipWhiteSpace(const char * str)
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{
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nvDebugCheck(str != NULL);
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while (*str == ' ') str++;
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return str;
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}
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NVCORE_API char * nv::strSkipWhiteSpace(char * str)
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{
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nvDebugCheck(str != NULL);
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while (*str == ' ') str++;
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return str;
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}
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/** Pattern matching routine. I don't remember where did I get this. */
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bool nv::strMatch(const char * str, const char * pat)
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{
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nvDebugCheck(str != NULL);
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nvDebugCheck(pat != NULL);
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char c2;
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while (true) {
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if (*pat==0) {
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if (*str==0) return true;
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else return false;
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}
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if ((*str==0) && (*pat!='*')) return false;
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if (*pat=='*') {
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pat++;
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if (*pat==0) return true;
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while (true) {
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if (strMatch(str, pat)) return true;
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if (*str==0) return false;
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str++;
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}
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}
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if (*pat=='?') goto match;
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if (*pat=='[') {
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pat++;
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while (true) {
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if ((*pat==']') || (*pat==0)) return false;
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if (*pat==*str) break;
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if (pat[1] == '-') {
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c2 = pat[2];
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if (c2==0) return false;
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if ((*pat<=*str) && (c2>=*str)) break;
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if ((*pat>=*str) && (c2<=*str)) break;
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pat+=2;
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}
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pat++;
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}
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while (*pat!=']') {
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if (*pat==0) {
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pat--;
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break;
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}
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pat++;
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}
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goto match;
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}
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if (*pat == NV_PATH_SEPARATOR) {
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pat++;
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if (*pat==0) return false;
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}
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if (*pat!=*str) return false;
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match:
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pat++;
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str++;
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}
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}
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bool nv::isNumber(const char * str) {
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while(*str != '\0') {
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if (!isDigit(*str)) return false;
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str++;
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}
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return true;
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}
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/** Empty string. */
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StringBuilder::StringBuilder() : m_size(0), m_str(NULL)
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{
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}
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/** Preallocate space. */
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StringBuilder::StringBuilder( uint size_hint ) : m_size(size_hint)
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{
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nvDebugCheck(m_size > 0);
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m_str = strAlloc(m_size);
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*m_str = '\0';
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}
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/** Copy ctor. */
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StringBuilder::StringBuilder( const StringBuilder & s ) : m_size(0), m_str(NULL)
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{
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copy(s);
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}
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/** Copy string. */
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StringBuilder::StringBuilder(const char * s) : m_size(0), m_str(NULL)
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{
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if (s != NULL) {
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copy(s);
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}
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}
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/** Copy string. */
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StringBuilder::StringBuilder(const char * s, uint len) : m_size(0), m_str(NULL)
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{
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copy(s, len);
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}
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/** Delete the string. */
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StringBuilder::~StringBuilder()
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{
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strFree(m_str);
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}
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/** Format a string safely. */
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StringBuilder & StringBuilder::format( const char * fmt, ... )
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{
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nvDebugCheck(fmt != NULL);
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va_list arg;
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va_start( arg, fmt );
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formatList( fmt, arg );
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va_end( arg );
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return *this;
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}
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/** Format a string safely. */
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StringBuilder & StringBuilder::formatList( const char * fmt, va_list arg )
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{
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nvDebugCheck(fmt != NULL);
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if (m_size == 0) {
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m_size = 64;
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m_str = strAlloc( m_size );
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}
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va_list tmp;
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va_copy(tmp, arg);
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#if NV_CC_MSVC && _MSC_VER >= 1400
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int n = vsnprintf_s(m_str, m_size, _TRUNCATE, fmt, tmp);
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#else
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int n = vsnprintf(m_str, m_size, fmt, tmp);
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#endif
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va_end(tmp);
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while( n < 0 || n >= int(m_size) ) {
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if( n > -1 ) {
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m_size = n + 1;
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}
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else {
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m_size *= 2;
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}
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m_str = strReAlloc(m_str, m_size);
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va_copy(tmp, arg);
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#if NV_CC_MSVC && _MSC_VER >= 1400
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n = vsnprintf_s(m_str, m_size, _TRUNCATE, fmt, tmp);
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#else
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n = vsnprintf(m_str, m_size, fmt, tmp);
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#endif
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va_end(tmp);
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}
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nvDebugCheck(n < int(m_size));
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// Make sure it's null terminated.
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nvDebugCheck(m_str[n] == '\0');
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//str[n] = '\0';
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return *this;
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}
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/** Append a string. */
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StringBuilder & StringBuilder::append( const char * s )
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{
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return append(s, U32(strlen( s )));
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}
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/** Append a string. */
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StringBuilder & StringBuilder::append(const char * s, uint len)
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{
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nvDebugCheck(s != NULL);
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uint offset = length();
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const uint size = offset + len + 1;
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reserve(size);
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strCpy(m_str + offset, len + 1, s, len);
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return *this;
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}
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/** Append a formatted string. */
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StringBuilder & StringBuilder::appendFormat( const char * fmt, ... )
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{
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nvDebugCheck( fmt != NULL );
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va_list arg;
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va_start( arg, fmt );
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appendFormatList( fmt, arg );
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va_end( arg );
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return *this;
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}
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/** Append a formatted string. */
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StringBuilder & StringBuilder::appendFormatList( const char * fmt, va_list arg )
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{
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nvDebugCheck( fmt != NULL );
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va_list tmp;
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va_copy(tmp, arg);
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if (m_size == 0) {
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formatList(fmt, arg);
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}
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else {
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StringBuilder tmp_str;
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tmp_str.formatList( fmt, tmp );
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append( tmp_str.str() );
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}
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va_end(tmp);
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return *this;
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}
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// Append n spaces.
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StringBuilder & StringBuilder::appendSpace(uint n)
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{
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if (m_str == NULL) {
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m_size = n + 1;
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m_str = strAlloc(m_size);
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memset(m_str, ' ', m_size);
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m_str[n] = '\0';
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}
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else {
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const uint len = strLen(m_str);
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if (m_size < len + n + 1) {
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m_size = len + n + 1;
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m_str = strReAlloc(m_str, m_size);
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}
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memset(m_str + len, ' ', n);
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m_str[len+n] = '\0';
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}
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return *this;
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}
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/** Convert number to string in the given base. */
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StringBuilder & StringBuilder::number( int i, int base )
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{
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nvCheck( base >= 2 );
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nvCheck( base <= 36 );
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// @@ This needs to be done correctly.
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// length = floor(log(i, base));
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uint len = uint(log(float(i)) / log(float(base)) + 2); // one more if negative
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reserve(len);
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if( i < 0 ) {
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*m_str = '-';
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*i2a(uint(-i), m_str+1, base) = 0;
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}
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else {
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*i2a(i, m_str, base) = 0;
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}
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return *this;
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}
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/** Convert number to string in the given base. */
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StringBuilder & StringBuilder::number( uint i, int base )
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{
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nvCheck( base >= 2 );
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nvCheck( base <= 36 );
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// @@ This needs to be done correctly.
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// length = floor(log(i, base));
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uint len = uint(log(float(i)) / log(float(base)) - 0.5f + 1);
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reserve(len);
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*i2a(i, m_str, base) = 0;
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return *this;
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}
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/** Resize the string preserving the contents. */
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StringBuilder & StringBuilder::reserve( uint size_hint )
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{
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nvCheck(size_hint != 0);
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if (size_hint > m_size) {
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m_str = strReAlloc(m_str, size_hint);
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m_size = size_hint;
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}
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return *this;
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}
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/** Copy a string safely. */
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StringBuilder & StringBuilder::copy(const char * s)
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{
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nvCheck( s != NULL );
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const uint str_size = uint(strlen( s )) + 1;
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reserve(str_size);
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memcpy(m_str, s, str_size);
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return *this;
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}
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/** Copy a string safely. */
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StringBuilder & StringBuilder::copy(const char * s, uint len)
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{
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nvCheck( s != NULL );
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const uint str_size = len + 1;
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reserve(str_size);
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strCpy(m_str, str_size, s, len);
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return *this;
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}
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/** Copy an StringBuilder. */
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StringBuilder & StringBuilder::copy( const StringBuilder & s )
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{
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if (s.m_str == NULL) {
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nvCheck( s.m_size == 0 );
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reset();
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}
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else {
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reserve( s.m_size );
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strCpy( m_str, s.m_size, s.m_str );
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}
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return *this;
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}
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bool StringBuilder::endsWith(const char * str) const
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{
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uint l = uint(strlen(str));
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uint ml = uint(strlen(m_str));
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if (ml < l) return false;
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return strncmp(m_str + ml - l, str, l) == 0;
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}
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bool StringBuilder::beginsWith(const char * str) const
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{
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size_t l = strlen(str);
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return strncmp(m_str, str, l) == 0;
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}
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// Find given char starting from the end.
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char * StringBuilder::reverseFind(char c)
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{
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int length = (int)strlen(m_str) - 1;
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while (length >= 0 && m_str[length] != c) {
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length--;
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}
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if (length >= 0) {
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return m_str + length;
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}
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else {
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return NULL;
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}
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}
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/** Reset the string. */
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void StringBuilder::reset()
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{
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m_size = 0;
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strFree( m_str );
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m_str = NULL;
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}
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/** Release the allocated string. */
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char * StringBuilder::release()
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{
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char * str = m_str;
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m_size = 0;
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m_str = NULL;
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return str;
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}
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// Swap strings.
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void nv::swap(StringBuilder & a, StringBuilder & b) {
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swap(a.m_size, b.m_size);
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swap(a.m_str, b.m_str);
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}
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/// Get the file name from a path.
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const char * Path::fileName() const
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{
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return fileName(m_str);
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}
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/// Get the extension from a file path.
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const char * Path::extension() const
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{
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return extension(m_str);
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}
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/*static */void Path::translatePath(char * path, char pathSeparator/*= NV_PATH_SEPARATOR*/) {
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nvCheck(path != NULL);
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for (int i = 0;; i++) {
|
|
if (path[i] == '\0') break;
|
|
if (path[i] == '\\' || path[i] == '/') path[i] = pathSeparator;
|
|
}
|
|
}
|
|
|
|
/// Toggles path separators (ie. \\ into /).
|
|
void Path::translatePath(char pathSeparator/*=NV_PATH_SEPARATOR*/)
|
|
{
|
|
nvCheck(!isNull());
|
|
translatePath(m_str, pathSeparator);
|
|
}
|
|
|
|
void Path::appendSeparator(char pathSeparator/*=NV_PATH_SEPARATOR*/)
|
|
{
|
|
nvCheck(!isNull());
|
|
|
|
const uint l = length();
|
|
|
|
if (m_str[l] != '\\' && m_str[l] != '/') {
|
|
char separatorString[] = { pathSeparator, '\0' };
|
|
append(separatorString);
|
|
}
|
|
}
|
|
|
|
|
|
/**
|
|
* Strip the file name from a path.
|
|
* @warning path cannot end with '/' o '\\', can't it?
|
|
*/
|
|
void Path::stripFileName()
|
|
{
|
|
nvCheck( m_str != NULL );
|
|
|
|
int length = (int)strlen(m_str) - 1;
|
|
while (length > 0 && m_str[length] != '/' && m_str[length] != '\\'){
|
|
length--;
|
|
}
|
|
if( length ) {
|
|
m_str[length+1] = 0;
|
|
}
|
|
else {
|
|
m_str[0] = 0;
|
|
}
|
|
}
|
|
|
|
|
|
/// Strip the extension from a path name.
|
|
void Path::stripExtension()
|
|
{
|
|
nvCheck( m_str != NULL );
|
|
|
|
int length = (int)strlen(m_str) - 1;
|
|
while (length > 0 && m_str[length] != '.') {
|
|
length--;
|
|
if( m_str[length] == NV_PATH_SEPARATOR ) {
|
|
return; // no extension
|
|
}
|
|
}
|
|
if (length > 0) {
|
|
m_str[length] = 0;
|
|
}
|
|
}
|
|
|
|
|
|
/// Get the path separator.
|
|
// static
|
|
char Path::separator()
|
|
{
|
|
return NV_PATH_SEPARATOR;
|
|
}
|
|
|
|
// static
|
|
const char * Path::fileName(const char * str)
|
|
{
|
|
nvCheck( str != NULL );
|
|
|
|
int length = (int)strlen(str) - 1;
|
|
while (length >= 0 && str[length] != '\\' && str[length] != '/') {
|
|
length--;
|
|
}
|
|
|
|
return &str[length+1];
|
|
}
|
|
|
|
// static
|
|
const char * Path::extension(const char * str)
|
|
{
|
|
nvCheck( str != NULL );
|
|
|
|
int length, l;
|
|
l = length = (int)strlen( str );
|
|
while (length > 0 && str[length] != '.') {
|
|
length--;
|
|
if (str[length] == '\\' || str[length] == '/') {
|
|
return &str[l]; // no extension
|
|
}
|
|
}
|
|
if (length == 0) {
|
|
return &str[l];
|
|
}
|
|
return &str[length];
|
|
}
|
|
|
|
|
|
|
|
/// Clone this string
|
|
String String::clone() const
|
|
{
|
|
String str(data);
|
|
return str;
|
|
}
|
|
|
|
void String::setString(const char * str)
|
|
{
|
|
if (str == NULL) {
|
|
data = NULL;
|
|
}
|
|
else {
|
|
allocString( str );
|
|
addRef();
|
|
}
|
|
}
|
|
|
|
void String::setString(const char * str, uint length)
|
|
{
|
|
nvDebugCheck(str != NULL);
|
|
|
|
allocString(str, length);
|
|
addRef();
|
|
}
|
|
|
|
void String::setString(const StringBuilder & str)
|
|
{
|
|
if (str.str() == NULL) {
|
|
data = NULL;
|
|
}
|
|
else {
|
|
allocString(str.str());
|
|
addRef();
|
|
}
|
|
}
|
|
|
|
// Add reference count.
|
|
void String::addRef()
|
|
{
|
|
if (data != NULL)
|
|
{
|
|
setRefCount(getRefCount() + 1);
|
|
}
|
|
}
|
|
|
|
// Decrease reference count.
|
|
void String::release()
|
|
{
|
|
if (data != NULL)
|
|
{
|
|
const uint16 count = getRefCount();
|
|
setRefCount(count - 1);
|
|
if (count - 1 == 0) {
|
|
free(data - 2);
|
|
data = NULL;
|
|
}
|
|
}
|
|
}
|
|
|
|
void String::allocString(const char * str, uint len)
|
|
{
|
|
const char * ptr = malloc<char>(2 + len + 1);
|
|
|
|
setData( ptr );
|
|
setRefCount( 0 );
|
|
|
|
// Copy string.
|
|
strCpy(const_cast<char *>(data), len+1, str, len);
|
|
|
|
// Add terminating character.
|
|
const_cast<char *>(data)[len] = '\0';
|
|
}
|
|
|
|
void nv::swap(String & a, String & b) {
|
|
swap(a.data, b.data);
|
|
}
|