244 lines
5.4 KiB
C++
244 lines
5.4 KiB
C++
/*
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* Portions of this file are copyright Rebirth contributors and licensed as
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* described in COPYING.txt.
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* Portions of this file are copyright Parallax Software and licensed
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* according to the Parallax license below.
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* See COPYING.txt for license details.
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THE COMPUTER CODE CONTAINED HEREIN IS THE SOLE PROPERTY OF PARALLAX
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SOFTWARE CORPORATION ("PARALLAX"). PARALLAX, IN DISTRIBUTING THE CODE TO
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END-USERS, AND SUBJECT TO ALL OF THE TERMS AND CONDITIONS HEREIN, GRANTS A
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ROYALTY-FREE, PERPETUAL LICENSE TO SUCH END-USERS FOR USE BY SUCH END-USERS
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IN USING, DISPLAYING, AND CREATING DERIVATIVE WORKS THEREOF, SO LONG AS
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SUCH USE, DISPLAY OR CREATION IS FOR NON-COMMERCIAL, ROYALTY OR REVENUE
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FREE PURPOSES. IN NO EVENT SHALL THE END-USER USE THE COMPUTER CODE
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CONTAINED HEREIN FOR REVENUE-BEARING PURPOSES. THE END-USER UNDERSTANDS
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AND AGREES TO THE TERMS HEREIN AND ACCEPTS THE SAME BY USE OF THIS FILE.
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COPYRIGHT 1993-1999 PARALLAX SOFTWARE CORPORATION. ALL RIGHTS RESERVED.
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*/
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/*
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*
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* string manipulation utility code
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*
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*/
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#include <stdio.h>
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#include <stdlib.h>
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#include <ctype.h>
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#include <string.h>
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#include <stdarg.h>
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#include "u_mem.h"
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#include "dxxerror.h"
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#include "strutil.h"
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#include "inferno.h"
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#include "compiler-range_for.h"
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namespace dcx {
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#ifdef macintosh
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void snprintf(char *out_string, int size, char * format, ... )
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{
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va_list args;
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char buf[1024];
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va_start(args, format );
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vsprintf(buf,format,args);
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va_end(args);
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// Hack! Don't know any other [simple] way to do this, but I doubt it would ever exceed 1024 long.
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Assert(strlen(buf) < 1024);
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Assert(size < 1024);
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strncpy(out_string, buf, size);
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}
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#endif // macintosh
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// string compare without regard to case
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#ifndef DXX_HAVE_STRCASECMP
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int d_stricmp( const char *s1, const char *s2 )
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{
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for (;; ++s1, ++s2)
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{
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auto u1 = toupper(static_cast<unsigned>(*s1));
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auto u2 = toupper(static_cast<unsigned>(*s2));
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if (u1 != u2)
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return (u1 > u2) ? 1 : -1;
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if (!u1)
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return u1;
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}
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}
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int d_strnicmp(const char *s1, const char *s2, uint_fast32_t n)
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{
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for (; n; ++s1, ++s2, --n)
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{
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auto u1 = toupper(static_cast<unsigned>(*s1));
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auto u2 = toupper(static_cast<unsigned>(*s2));
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if (u1 != u2)
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return (u1 > u2) ? 1 : -1;
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if (!u1)
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return u1;
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}
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return 0;
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}
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#endif
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void d_strlwr( char *s1 )
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{
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while( *s1 ) {
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*s1 = tolower(*s1);
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s1++;
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}
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}
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void d_strupr( char *s1 )
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{
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while( *s1 ) {
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*s1 = toupper(*s1);
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s1++;
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}
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}
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void d_strrev( char *s1 )
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{
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char *h, *t;
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h = s1;
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t = s1 + strlen(s1) - 1;
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while (h < t) {
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char c;
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c = *h;
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*h++ = *t;
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*t-- = c;
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}
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}
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#ifdef DEBUG_MEMORY_ALLOCATIONS
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char *(d_strdup)(const char *str, const char *var, const char *file, unsigned line)
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{
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char *newstr;
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const auto len = strlen(str) + 1;
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MALLOC<char>(newstr, len, var, file, line);
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return static_cast<char *>(memcpy(newstr, str, len));
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}
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#endif
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// remove extension from filename
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void removeext(const char *const filename, array<char, 20> &out)
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{
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const char *p = nullptr;
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auto i = filename;
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for (; const char c = *i; ++i)
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{
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if (c == '.')
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p = i;
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/* No break - find the last '.', not the first. */
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}
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if (!p)
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p = i;
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const std::size_t rawlen = p - filename;
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const std::size_t copy_len = rawlen < out.size() ? rawlen : 0;
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out[copy_len] = 0;
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memcpy(out.data(), filename, copy_len);
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}
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//give a filename a new extension, won't append if strlen(dest) > 8 chars.
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void change_filename_extension( char *dest, const char *src, const char *ext )
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{
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char *p;
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strcpy (dest, src);
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if (ext[0] == '.')
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ext++;
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p = strrchr(dest, '.');
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if (!p) {
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if (strlen(dest) > FILENAME_LEN - 5)
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return; // a non-opened file is better than a bad memory access
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p = dest + strlen(dest);
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*p = '.';
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}
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strcpy(p+1,ext);
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}
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void d_splitpath(const char *name, struct splitpath_t *path)
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{
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const char *s, *p;
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p = name;
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s = strchr(p, ':');
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if ( s != NULL ) {
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path->drive_start = p;
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path->drive_end = s;
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p = s+1;
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} else
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path->drive_start = path->drive_end = NULL;
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s = strrchr(p, '\\');
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if ( s != NULL) {
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path->path_start = p;
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path->path_end = s + 1;
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p = s+1;
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} else
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path->path_start = path->path_end = NULL;
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s = strchr(p, '.');
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if ( s != NULL) {
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path->base_start = p;
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path->base_end = s;
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p = s+1;
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} else
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path->base_start = path->base_end = NULL;
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path->ext_start = p;
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}
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int string_array_sort_func(const void *v0, const void *v1)
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{
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const auto e0 = reinterpret_cast<const char *const *>(v0);
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const auto e1 = reinterpret_cast<const char *const *>(v1);
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return d_stricmp(*e0, *e1);
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}
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void string_array_t::add(const char *s)
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{
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const auto insert_string = [this, s]{
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auto &b = this->buffer;
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b.insert(b.end(), s, s + strlen(s) + 1);
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};
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if (buffer.empty())
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{
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insert_string();
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ptr.emplace_back(&buffer.front());
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return;
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}
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const char *ob = &buffer.front();
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ptr.emplace_back(1 + &buffer.back());
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insert_string();
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if (auto d = &buffer.front() - ob)
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{
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// Update all the pointers in the pointer list
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range_for (auto &i, ptr)
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i += d;
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}
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}
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void string_array_t::tidy(std::size_t offset, int (*comp)( const char *, const char * ))
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{
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// Sort by name, starting at offset
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auto b = std::next(ptr.begin(), offset);
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auto e = ptr.end();
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std::sort(b, e, [](const char *sa, const char *sb) { return d_stricmp(sa, sb) < 0; });
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// Remove duplicates
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// Can't do this before reallocating, otherwise it makes a mess of things (the strings in the buffer aren't ordered)
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ptr.erase(std::unique(b, e, [=](const char *sa, const char *sb) { return (*comp)(sa, sb) == 0; }), e);
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}
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}
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