/* Copyright (c) 2002-2010, Dirk Krause All rights reserved. Redistribution and use in source and binary forms, with or without modification, are permitted provided that the following conditions are met: * Redistributions of source code must retain the above copyright notice, this list of conditions and the following disclaimer. * Redistributions in binary form must reproduce the above opyright notice, this list of conditions and the following disclaimer in the documentation and/or other materials provided with the distribution. * Neither the name of the Dirk Krause nor the names of contributors may be used to endorse or promote products derived from this software without specific prior written permission. THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. */ /** @file psonly.c The psonly program. */ #include #include #if DK_HAVE_STDLIB_H #include #endif #if DK_HAVE_STRING_H #include #endif #if DK_HAVE_UNISTD_H #include #endif #include #line 61 "psonly.ctr" /** Exit status. */ static int exval = 0; /** Start of PS contents. */ static char ps_header[] = { "%!PS-Adobe" }; /** Input buffer. */ static char inbuffer[4096]; /** Output buffer. */ static char outbuffer[4096]; /** Number of used bytes in output buffer. */ static size_t outbuffer_used; /** Flush output buffer. @param out Output file. */ static void flush_outbuffer DK_P1(FILE *,out) { if(outbuffer_used) { (void)fwrite((void *)outbuffer,1,outbuffer_used,out); } outbuffer_used = 0; } /** Add one character to output buffer, flush if necessary. @param out Output file. @param c Character to add. */ static void add_out_char DK_P2(FILE *,out, char,c) { outbuffer[outbuffer_used++] = c; if(outbuffer_used == sizeof(outbuffer)) { flush_outbuffer(out); } } /** Run for opened files. @param in Input file. @param out Output file. */ static void run_for_files DK_P2(FILE *,in, FILE *,out) { int can_continue; int state; size_t header_found, header_sz; size_t inbuffer_sz, inbuffer_used; char c, *ptr; header_sz = strlen(ps_header); can_continue = 1; state = 0; header_found = 0; outbuffer_used = 0; while(can_continue) { inbuffer_sz = fread((void *)inbuffer,1,sizeof(inbuffer),in); if(inbuffer_sz > 0) { ptr = inbuffer; inbuffer_used = 0; while(inbuffer_used < inbuffer_sz) { c = *ptr; switch(state) { case 0: { if(c == ps_header[header_found]) { header_found++; if(header_found == header_sz) { state = 1; exval = 1; for(header_found = 0; header_found < header_sz; header_found++) { add_out_char(out, ps_header[header_found]); } } } else { header_found = 0; } } break; case 1: { if(c == 0x1B) { state = 2; } else { add_out_char(out, c); } } break; case 2: { if(c == 0x25) { state = 3; } else { state = 1; add_out_char(out, 0x1B); add_out_char(out, c); } } break; case 3: { if(c == 0x2D) { state = 4; } else { state = 1; add_out_char(out, 0x1B); add_out_char(out, 0x25); add_out_char(out, c); } } break; case 4: { if(c == 0x31) { state = 5; } else { state = 1; add_out_char(out, 0x1B); add_out_char(out, 0x25); add_out_char(out, 0x2D); add_out_char(out, c); } } break; case 5: { if(c == 0x32) { state = 6; } else { state = 1; add_out_char(out, 0x1B); add_out_char(out, 0x25); add_out_char(out, 0x2D); add_out_char(out, 0x31); add_out_char(out, c); } } break; case 6: { if(c == 0x33) { state = 7; } else { state = 1; add_out_char(out, 0x1B); add_out_char(out, 0x25); add_out_char(out, 0x2D); add_out_char(out, 0x31); add_out_char(out, 0x32); add_out_char(out, c); } } break; case 7: { if(c == 0x34) { state = 8; } else { state = 1; add_out_char(out, 0x1B); add_out_char(out, 0x25); add_out_char(out, 0x2D); add_out_char(out, 0x31); add_out_char(out, 0x32); add_out_char(out, 0x33); add_out_char(out, c); } } break; case 8: { if(c == 0x35) { state = 9; } else { state = 1; add_out_char(out, 0x1B); add_out_char(out, 0x25); add_out_char(out, 0x2D); add_out_char(out, 0x31); add_out_char(out, 0x32); add_out_char(out, 0x33); add_out_char(out, 0x34); add_out_char(out, c); } } break; case 9: { if(c == 0x58) { state = 10; } else { state = 1; add_out_char(out, 0x1B); add_out_char(out, 0x25); add_out_char(out, 0x2D); add_out_char(out, 0x31); add_out_char(out, 0x32); add_out_char(out, 0x33); add_out_char(out, 0x34); add_out_char(out, 0x35); add_out_char(out, c); } } break; } inbuffer_used++; ptr++; } } else { can_continue = 0; } } flush_outbuffer(out); } /** The main() function of the psonly program. @param argc Number of command line arguments. @param argv Command line arguments array. @return 0 on success, any other value indicates an error. */ #if DK_HAVE_PROTOTYPES int main(int argc, char *argv[]) #else int main(argc, argv) int argc; char *argv[]; #endif { FILE *in, *out; switch(argc) { case 1: { run_for_files(stdin, stdout); } break; case 2: { in = dksf_fopen(argv[1], "rb"); if(in) { run_for_files(in, stdout); fclose(in); } } break; case 3: { in = dksf_fopen(argv[1], "rb"); if(in) { out = dksf_fopen(argv[2], "wb"); if(out) { run_for_files(in, out); fclose(out); } fclose(in); } } break; } exval = (exval ? 0 : 1); exit(exval); return exval; }