Lee Salzman
20252c19fd
git-svn-id: svn://svn.code.sf.net/p/actiongame/code/trunk/ac@1059 e016b1c5-ed68-44aa-a2f7-31cac88cffde
93 lines
2.2 KiB
C++
93 lines
2.2 KiB
C++
// implementation of generic tools
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#include "cube.h"
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//////////////////////////// pool ///////////////////////////
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///////////////////////// misc tools ///////////////////////
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char *path(char *s)
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{
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for(char *t = s; (t = strpbrk(t, "/\\")); *t++ = PATHDIV);
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for(char *prevdir = NULL, *curdir = s;;)
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{
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prevdir = curdir[0]==PATHDIV ? curdir+1 : curdir;
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curdir = strchr(prevdir, PATHDIV);
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if(!curdir) break;
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if(prevdir+1==curdir && prevdir[0]=='.')
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{
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memmove(prevdir, curdir+1, strlen(curdir+1)+1);
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curdir = prevdir;
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}
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else if(curdir[1]=='.' && curdir[2]=='.' && curdir[3]==PATHDIV)
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{
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if(prevdir+2==curdir && prevdir[0]=='.' && prevdir[1]=='.') continue;
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memmove(prevdir, curdir+4, strlen(curdir+4)+1);
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curdir = prevdir;
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}
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}
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return s;
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}
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char *parentdir(char *directory)
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{
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char *p = strrchr(directory, '/');
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if(!p) p = directory;
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size_t len = p-directory+1;
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char *parent = new char[len];
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s_strncpy(parent, directory, len);
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return parent;
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}
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char *loadfile(char *fn, int *size)
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{
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FILE *f = fopen(fn, "rb");
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if(!f) return NULL;
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fseek(f, 0, SEEK_END);
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int len = ftell(f);
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if(len<=0) { fclose(f); return NULL; };
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fseek(f, 0, SEEK_SET);
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char *buf = new char[len+1];
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if(!buf) { fclose(f); return NULL; };
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buf[len] = 0;
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size_t rlen = fread(buf, 1, len, f);
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fclose(f);
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if(size_t(len)!=rlen)
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{
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delete[] buf;
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return NULL;
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}
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if(size!=NULL) *size = len;
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return buf;
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}
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bool cmpb(void *b, int n, enet_uint32 c)
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{
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ENetBuffer buf;
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buf.data = b;
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buf.dataLength = n;
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return enet_crc32(&buf, 1)==c;
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}
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bool cmpf(char *fn, enet_uint32 c)
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{
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int n = 0;
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char *b = loadfile(fn, &n);
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bool r = cmpb(b, n, c);
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delete[] b;
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return r;
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}
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void endianswap(void *memory, int stride, int length) // little endian as storage format
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{
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#if SDL_BYTEORDER == SDL_BIG_ENDIAN
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loop(w, length) loop(i, stride/2)
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{
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uchar *p = (uchar *)memory+w*stride;
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uchar t = p[i];
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p[i] = p[stride-i-1];
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p[stride-i-1] = t;
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}
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#endif
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}
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