316 lines
5.8 KiB
C
316 lines
5.8 KiB
C
/*-
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* Copyright (c) 2017-2021 Carsten Sonne Larsen <cs@innolan.net>
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*
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*/
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#include "config.h"
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#ifndef HAVE_STRLEN
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/*
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* Get the length of a null terminated string.
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*/
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int StrLen(const char *string)
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{
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char *i = (char *)string;
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char *s = i;
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while (*i)
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i++;
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return (int)(i - s);
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}
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#endif
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#ifndef HAVE_STRCPY
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/*
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* Copies the string pointed to by src to dest.
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*/
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char *StrCopy(char *dest, const char *src)
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{
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char *q = (char *)src;
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char *p = dest;
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while ((*p++ = *q++))
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;
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*p = '\0';
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return dest;
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}
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#endif
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char *AppendText(char *start, const char *text)
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{
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char *p = start;
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char *q = (char *)text;
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while (*q != '\0')
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*p++ = *q++;
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*p = '\0';
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return p;
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}
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char *AppendChar(char *start, const char c, unsigned int count)
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{
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char *p = start;
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unsigned int n = count;
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while (n--)
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*p++ = c;
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*p = '\0';
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return p;
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}
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int TrimRight(char *string)
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{
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char *i = string;
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char *s = i;
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while (*i)
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i++;
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if (i == s)
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return 0;
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i--;
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while (*i == ' ' || *i == '\r' || *i == '\n' || *i == '\t')
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*i-- = '\0';
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return (int)(i - s + 1);
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}
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/*
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* Find the first occurrence of a character.
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*/
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char *StrChr(const char *start, const char c, int len)
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{
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char *i = (char *)start;
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int j = 0;
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if (i == NULL)
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return NULL;
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do
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{
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if (*i == c)
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return i;
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i++;
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j++;
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} while (j < len);
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return NULL;
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}
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/*
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* Find the last occurrence of a character.
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*/
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char *StrRChr(const char *start, const char c, int len)
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{
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char *i = (char *)start;
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char *l = NULL;
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int j = 0;
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if (i == NULL)
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return NULL;
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do
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{
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if (*i == c)
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l = i;
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i++;
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j++;
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} while (j < len);
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return l;
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}
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/*
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* Determine if a prefix occurs at the start of a string.
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*/
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bool StartsWith(const char *string, const char *prefix)
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{
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char *i = (char *)string;
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char *j = (char *)prefix;
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if (i == NULL || j == NULL)
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return false;
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while (*i == *j && *i != '\0' && *j != '\0')
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{
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i++;
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j++;
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}
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return (*j == '\0' ? true : false);
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}
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/*
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* Determine if a suffix occurs at the end of a string.
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*/
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bool EndsWith(const char *string, const char *suffix)
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{
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int a = 0;
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int b = 0;
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char *i = (char *)string;
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char *j = (char *)suffix;
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if (i == NULL || j == NULL)
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return false;
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while (*i)
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{
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i++;
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a++;
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}
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while (*j)
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{
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j++;
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b++;
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}
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if (b > a)
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return false;
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while (*i == *j && b != 0)
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{
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i--;
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j--;
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b--;
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}
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return (b == 0) ? true : false;
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}
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#ifndef HAVE_SNPRINTF
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struct RawDoFmtStream
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{
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char *buf;
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int size;
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};
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static void RawDoFmtChar(REG(d0, UBYTE c), REG(a3, struct RawDoFmtStream *s))
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{
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if (s->size > 0)
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{
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*(s->buf)++ = c;
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(s->size)--;
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if (s->size == 1)
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{
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*(s->buf) = '\0';
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s->size = 0;
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}
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}
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}
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/*
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* Formats and stores a series of characters and values.
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*/
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int VSNPrintf(char *str, size_t size, const char *format, va_list ap)
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{
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int result = 0;
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if (str != NULL)
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{
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struct RawDoFmtStream s;
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s.buf = str;
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s.size = size;
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RawDoFmt(format, (void *)ap, (void (*)())RawDoFmtChar, (void *)&s);
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if ((result = (size - s.size)) != size)
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--result;
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}
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return result;
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}
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/*
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* Formats and stores a series of characters and values in the array buffer.
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*/
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int SNPrintf(char *str, size_t size, const char *format, ...)
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{
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va_list args;
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int result;
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va_start(args, format);
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result = VSNPrintf(str, size, format, args);
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va_end(args);
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return result;
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}
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#endif
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// Not curretly in used
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#if 0
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/*
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* Split filename in path and filename.
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*/
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void SplitFileName(const char *s, char *path, char *name)
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{
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int len, x, y;
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char *c;
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if (s == NULL || *s == '\0')
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{
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*path = '\0';
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*name = '\0';
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return;
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}
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len = StrLen(s);
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c = StrRChr(s, '/', len);
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if (c == NULL)
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{
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c = StrChr(s, ':', len);
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if (c == NULL)
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{
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*path = '\0';
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CopyMem((char *)s, name, len);
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return;
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}
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else
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{
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// Include :
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x = (c - s + 1);
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}
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}
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else
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{
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x = (c - s);
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}
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y = len - (c - s);
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*(char *)(path + x) = '\0';
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CopyMem((char *)s, path, x);
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CopyMem(++c, name, y);
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}
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#endif
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