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/******************************************************************************
*
* utilstr.cpp - String utility functions
*
* $Id: utilstr.cpp 3515 2017-11-01 11:38:09Z scribe $
*
* Copyright 1997-2013 CrossWire Bible Society (http://www.crosswire.org)
* CrossWire Bible Society
* P. O. Box 2528
* Tempe, AZ 85280-2528
*
* This program is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License as published by the
* Free Software Foundation version 2.
*
* This program is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* General Public License for more details.
*
*/
#include <utilstr.h>
#include <ctype.h>
#include <string.h>
#include <sysdata.h>
#include <swlog.h>
#include <swbuf.h>
SWORD_NAMESPACE_START
const unsigned char SW_toupper_array[256] = {
0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07,
0x08, 0x09, 0x0a, 0x0b, 0x0c, 0x0d, 0x0e, 0x0f,
0x10, 0x11, 0x12, 0x13, 0x14, 0x15, 0x16, 0x17,
0x18, 0x19, 0x1a, 0x1b, 0x1c, 0x1d, 0x1e, 0x1f,
0x20, 0x21, 0x22, 0x23, 0x24, 0x25, 0x26, 0x27,
0x28, 0x29, 0x2a, 0x2b, 0x2c, 0x2d, 0x2e, 0x2f,
0x30, 0x31, 0x32, 0x33, 0x34, 0x35, 0x36, 0x37,
0x38, 0x39, 0x3a, 0x3b, 0x3c, 0x3d, 0x3e, 0x3f,
0x40, 0x41, 0x42, 0x43, 0x44, 0x45, 0x46, 0x47,
0x48, 0x49, 0x4a, 0x4b, 0x4c, 0x4d, 0x4e, 0x4f,
0x50, 0x51, 0x52, 0x53, 0x54, 0x55, 0x56, 0x57,
0x58, 0x59, 0x5a, 0x5b, 0x5c, 0x5d, 0x5e, 0x5f,
0x60, 0x41, 0x42, 0x43, 0x44, 0x45, 0x46, 0x47,
0x48, 0x49, 0x4a, 0x4b, 0x4c, 0x4d, 0x4e, 0x4f,
0x50, 0x51, 0x52, 0x53, 0x54, 0x55, 0x56, 0x57,
0x58, 0x59, 0x5a, 0x7b, 0x7c, 0x7d, 0x7e, 0x7f,
0x80, 0x81, 0x82, 0x83, 0x84, 0x85, 0x86, 0x87,
0x88, 0x89, 0x8a, 0x8b, 0x8c, 0x8d, 0x8e, 0x8f,
0x90, 0x91, 0x92, 0x93, 0x94, 0x95, 0x96, 0x97,
0x98, 0x99, 0x9a, 0x9b, 0x9c, 0x9d, 0x9e, 0x9f,
0xa0, 0xa1, 0xa2, 0xa3, 0xa4, 0xa5, 0xa6, 0xa7,
0xa8, 0xa9, 0xaa, 0xab, 0xac, 0xad, 0xae, 0xaf,
0xb0, 0xb1, 0xb2, 0xb3, 0xb4, 0xb5, 0xb6, 0xb7,
0xb8, 0xb9, 0xba, 0xbb, 0xbc, 0xbd, 0xbe, 0xbf,
0xc0, 0xc1, 0xc2, 0xc3, 0xc4, 0xc5, 0xc6, 0xc7,
0xc8, 0xc9, 0xca, 0xcb, 0xcc, 0xcd, 0xce, 0xcf,
0xd0, 0xd1, 0xd2, 0xd3, 0xd4, 0xd5, 0xd6, 0xd7,
0xd8, 0xd9, 0xda, 0xdb, 0xdc, 0xdd, 0xde, 0xdf,
0xc0, 0xc1, 0xc2, 0xc3, 0xc4, 0xc5, 0xc6, 0xc7,
0xc8, 0xc9, 0xca, 0xcb, 0xcc, 0xcd, 0xce, 0xcf,
0xd0, 0xd1, 0xd2, 0xd3, 0xd4, 0xd5, 0xd6, 0xf7,
0xd8, 0xd9, 0xda, 0xdb, 0xdc, 0xdd, 0xde, 0xff
};
/******************************************************************************
* strstrip - Removes leading and trailing spaces from a string
*
* ENT: istr - string pointer to strip
*
* RET: *istr
*/
char *strstrip(char *istr) {
char *tmp = istr;
char *rtmp;
int len = (int)strlen(istr);
if (len < 1)
return istr;
rtmp = istr + (len - 1);
while ((rtmp > istr)&&((*rtmp == ' ')||(*rtmp == '\t')||(*rtmp == 10)||(*rtmp == 13))) *(rtmp--) = 0;
while ((*tmp == ' ')||(*tmp == '\t')||(*tmp == 10)||(*tmp == 13)) tmp++;
memmove(istr, tmp, (rtmp - tmp) + 1);
istr[(rtmp - tmp) + 1] = 0;
return istr;
}
/******************************************************************************
* stristr - Scans a string for the occurrence of a given substring, no case
*
* ENT: scans s1 for the first occurrence of the substring s2, ingnoring case
*
* RET: a pointer to the element in s1, where s2 begins (points to s2 in s1).
* If s2 does not occur in s1, returns null.
*/
const char *stristr(const char *s1, const char *s2) {
int tLen = (int)strlen(s2);
int cLen = (int)strlen(s1);
char *target = new char [ tLen + 1 ];
int i, j;
const char *retVal = 0;
strcpy(target, s2);
for (i = 0; i < tLen; i++)
target[i] = SW_toupper(target[i]);
for (i = 0; i < (cLen - tLen)+1; i++) {
if (SW_toupper(s1[i]) == (unsigned char)*target) {
for (j = 1; j < tLen; j++) {
if (SW_toupper(s1[i+j]) != (unsigned char)target[j])
break;
}
if (j == tLen) {
retVal = s1+i;
break;
}
}
}
delete [] target;
return retVal;
}
/******************************************************************************
* strnicmp - compares the first n bytes of 2 strings ignoring case
*
* ENT: compares s1 to s2 comparing the first n byte ingnoring case
*
* RET: same as strcmp
*/
int strnicmp(const char *s1, const char *s2, int len) {
int tLen = (int)strlen(s2);
int cLen = (int)strlen(s1);
char diff;
int i;
for (i = 0; ((i < len) && (i < tLen) && (i < cLen)); i++) {
if ((diff = SW_toupper(*s1) - SW_toupper(*s2)))
return diff;
s1++;
s2++;
}
return (i < len) ? cLen - tLen : 0;
}
int stricmp(const char *s1, const char *s2) {
#if defined(__GNUC__)
return ::strcasecmp(s1, s2);
#else
#if defined(_WIN32_WCE)
return ::_stricmp(s1, s2);
#else
return ::stricmp(s1, s2);
#endif
#endif
}
SWBuf assureValidUTF8(const char *buf) {
SWBuf myCopy = buf;
const unsigned char *b = (const unsigned char *)myCopy.c_str();
const unsigned char *q = 0;
bool invalidChar = false;
while (*b) {
q = b;
if (!getUniCharFromUTF8(&b)) {
long len = b - q;
if (len) {
invalidChar = true;
for (long start = q - (const unsigned char *)myCopy.c_str(); len; len--) {
myCopy[start+len-1] = 0x1a; // unicode replacement character
}
}
}
}
if (invalidChar) {
// SWLog::getSystemLog()->logWarning("Changing invalid UTF-8 string (%s) to (%s)\n", buf, myCopy.c_str());
}
return myCopy;
}
/****
* This can be called to convert a UTF8 stream to an SWBuf which manages
* a wchar_t[]
* access buffer with (wchar_t *)SWBuf::getRawData();
*
*/
SWBuf utf8ToWChar(const char *buf) {
const char *q = 0;
SWBuf wcharBuf;
while (*buf) {
q = buf;
wchar_t wc = getUniCharFromUTF8((const unsigned char **)&buf);
if (!wc) {
// if my buffer was advanced but nothing was converted, I had invalid data
if (buf - q) {
// invalid bytes in UTF8 stream
wcharBuf.append((wchar_t)0x1a); // unicode replacement character
}
}
else wcharBuf.append(wc);
}
return wcharBuf;
}
/****
* This can be called to convert a wchar_t[] to a UTF-8 SWBuf
*
*/
SWBuf wcharToUTF8(const wchar_t *buf) {
SWBuf utf8Buf;
while (*buf) {
getUTF8FromUniChar(*buf++, &utf8Buf);
}
return utf8Buf;
}
SWORD_NAMESPACE_END
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