/* Copyright (C) 2001-2012 Artifex Software, Inc. All Rights Reserved. This software is provided AS-IS with no warranty, either express or implied. This software is distributed under license and may not be copied, modified or distributed except as expressly authorized under the terms of the license contained in the file LICENSE in this distribution. Refer to licensing information at http://www.artifex.com or contact Artifex Software, Inc., 7 Mt. Lassen Drive - Suite A-134, San Rafael, CA 94903, U.S.A., +1(415)492-9861, for further information. */ /* Command line parsing and dispatching */ #include "ctype_.h" #include "memory_.h" #include "string_.h" #include /* for qsort */ #include "ghost.h" #include "gp.h" #include "gsargs.h" #include "gscdefs.h" #include "gsmalloc.h" /* for gs_malloc_limit */ #include "gsmdebug.h" #include "gspaint.h" /* for gs_erasepage */ #include "gxdevice.h" #include "gxdevmem.h" #include "gsdevice.h" #include "gxdevsop.h" /* for gxdso_* enums */ #include "gxclpage.h" #include "gdevprn.h" #include "stream.h" #include "ierrors.h" #include "estack.h" #include "ialloc.h" #include "strimpl.h" /* for sfilter.h */ #include "sfilter.h" /* for iscan.h */ #include "ostack.h" /* must precede iscan.h */ #include "iscan.h" #include "iconf.h" #include "imain.h" #include "imainarg.h" #include "iapi.h" #include "iminst.h" #include "iname.h" #include "store.h" #include "files.h" /* requires stream.h */ #include "interp.h" #include "iutil.h" #include "ivmspace.h" #include "vdtrace.h" /* Import operator procedures */ extern int zflush(i_ctx_t *); extern int zflushpage(i_ctx_t *); #ifndef GS_LIB # define GS_LIB "GS_LIB" #endif #ifndef GS_OPTIONS # define GS_OPTIONS "GS_OPTIONS" #endif /* This is now the default number of entries we initially * allocate for the search path array objects. The arrays * will now enlarge as required - * see imain.c: file_path_add()/extend_path_list_container() */ #ifndef GS_MAX_LIB_DIRS # define GS_MAX_LIB_DIRS 25 #endif #define MAX_BUFFERED_SIZE 1024 /* Note: sscanf incorrectly defines its first argument as char * */ /* rather than const char *. This accounts for the ugly casts below. */ /* Redefine puts to use outprintf, */ /* so it will work even without stdio. */ #undef puts #define puts(mem, str) outprintf(mem, "%s\n", str) /* Forward references */ #define runInit 1 #define runFlush 2 #define runBuffer 4 static int swproc(gs_main_instance *, const char *, arg_list *); static int argproc(gs_main_instance *, const char *); static int run_buffered(gs_main_instance *, const char *); static int esc_strlen(const char *); static void esc_strcat(char *, const char *); static int runarg(gs_main_instance *, const char *, const char *, const char *, int); static int run_string(gs_main_instance *, const char *, int); static int run_finish(gs_main_instance *, int, int, ref *); static int try_stdout_redirect(gs_main_instance * minst, const char *command, const char *filename); /* Forward references for help printout */ static void print_help(gs_main_instance *); static void print_revision(const gs_main_instance *); static void print_version(const gs_main_instance *); static void print_usage(const gs_main_instance *); static void print_devices(const gs_main_instance *); static void print_emulators(const gs_main_instance *); static void print_paths(gs_main_instance *); static void print_help_trailer(const gs_main_instance *); /* ------ Main program ------ */ /* Process the command line with a given instance. */ static FILE * gs_main_arg_fopen(const char *fname, void *vminst) { gs_main_set_lib_paths((gs_main_instance *) vminst); return lib_fopen(&((gs_main_instance *)vminst)->lib_path, ((gs_main_instance *)vminst)->heap, fname); } static void set_debug_flags(const char *arg, char *flags) { byte value = (*arg == '-' ? (++arg, 0) : 0xff); while (*arg) flags[*arg++ & 127] = value; } int gs_main_init_with_args(gs_main_instance * minst, int argc, char *argv[]) { const char *arg; arg_list args; int code; arg_init(&args, (const char **)argv, argc, gs_main_arg_fopen, (void *)minst, minst->get_codepoint, minst->heap); code = gs_main_init0(minst, 0, 0, 0, GS_MAX_LIB_DIRS); if (code < 0) return code; /* This first check is not needed on VMS since GS_LIB evaluates to the same value as that returned by gs_lib_default_path. Also, since GS_LIB is defined as a searchlist logical and getenv only returns the first entry in the searchlist, it really doesn't make sense to search that particular directory twice. */ #ifndef __VMS { int len = 0; int code = gp_getenv(GS_LIB, (char *)0, &len); if (code < 0) { /* key present, value doesn't fit */ char *path = (char *)gs_alloc_bytes(minst->heap, len, "GS_LIB"); gp_getenv(GS_LIB, path, &len); /* can't fail */ minst->lib_path.env = path; } } #endif /* __VMS */ minst->lib_path.final = gs_lib_default_path; code = gs_main_set_lib_paths(minst); if (code < 0) return code; /* Prescan the command line for --help and --version. */ { int i; bool helping = false; for (i = 1; i < argc; ++i) if (!arg_strcmp(&args, argv[i], "--")) { /* A PostScript program will be interpreting all the */ /* remaining switches, so stop scanning. */ helping = false; break; } else if (!arg_strcmp(&args, argv[i], "--help")) { print_help(minst); helping = true; } else if (!arg_strcmp(&args, argv[i], "--debug")) { gs_debug_flags_list(minst->heap); helping = true; } else if (!arg_strcmp(&args, argv[i], "--version")) { print_version(minst); puts(minst->heap, ""); /* \n */ helping = true; } if (helping) return e_Info; } /* Execute files named in the command line, */ /* processing options along the way. */ /* Wait until the first file name (or the end */ /* of the line) to finish initialization. */ minst->run_start = true; { int len = 0; int code = gp_getenv(GS_OPTIONS, (char *)0, &len); if (code < 0) { /* key present, value doesn't fit */ char *opts = (char *)gs_alloc_bytes(minst->heap, len, "GS_OPTIONS"); gp_getenv(GS_OPTIONS, opts, &len); /* can't fail */ #if defined(GS_NO_UTF8) if (arg_push_memory_string(&args, opts, false, minst->heap)) return e_Fatal; #else if (arg_push_decoded_memory_string(&args, opts, false, true, minst->heap)) return e_Fatal; #endif } } while ((arg = arg_next(&args, &code, minst->heap)) != 0) { switch (*arg) { case '-': code = swproc(minst, arg, &args); if (code < 0) return code; if (code > 0) outprintf(minst->heap, "Unknown switch %s - ignoring\n", arg); if (gs_debug[':'] && arg[1] == 'Z') { int i; dmprintf1(minst->heap, "%% Init started, instance 0x%p, with args: ", minst); for (i=1; iheap, "%s ", argv[i]); dmprintf(minst->heap, "\n"); } break; default: /* default is to treat this as a file name to be run */ code = argproc(minst, arg); if (code < 0) return code; if (minst->saved_pages_test_mode) { gx_device *pdev; /* get the current device */ pdev = gs_currentdevice(minst->i_ctx_p->pgs); if ((code = gx_saved_pages_param_process((gx_device_printer *)pdev, (byte *)"print normal flush", 18)) < 0) return code; if (code > 0) if ((code = gs_erasepage(minst->i_ctx_p->pgs)) < 0) return code; } } } if (code < 0) return code; code = gs_main_init2(minst); if (code < 0) return code; if (gs_debug[':']) { int i; dmprintf1(minst->heap, "%% Init done, instance 0x%p, with args: ", minst); for (i=1; iheap, "%s ", argv[i]); dmprintf(minst->heap, "\n"); } if (!minst->run_start) return e_Quit; return code ; } /* * Specify a decoding function */ void gs_main_inst_arg_decode(gs_main_instance * minst, gs_arg_get_codepoint *get_codepoint) { minst->get_codepoint = get_codepoint; } gs_arg_get_codepoint *gs_main_inst_get_arg_decode(gs_main_instance * minst) { return minst->get_codepoint; } /* * Run the 'start' procedure (after processing the command line). */ int gs_main_run_start(gs_main_instance * minst) { return run_string(minst, "systemdict /start get exec", runFlush); } /* Process switches. Return 0 if processed, 1 for unknown switch, */ /* <0 if error. */ static int swproc(gs_main_instance * minst, const char *arg, arg_list * pal) { char sw = arg[1]; ref vtrue; int code = 0; #undef initial_enter_name #define initial_enter_name(nstr, pvalue)\ i_initial_enter_name(minst->i_ctx_p, nstr, pvalue) make_true(&vtrue); arg += 2; /* skip - and letter */ switch (sw) { default: return 1; case 0: /* read stdin as a file char-by-char */ /* This is a ******HACK****** for Ghostview. */ minst->heap->gs_lib_ctx->stdin_is_interactive = true; goto run_stdin; case '_': /* read stdin with normal buffering */ minst->heap->gs_lib_ctx->stdin_is_interactive = false; run_stdin: minst->run_start = false; /* don't run 'start' */ /* Set NOPAUSE so showpage won't try to read from stdin. */ code = swproc(minst, "-dNOPAUSE", pal); if (code) return code; code = gs_main_init2(minst); /* Finish initialization */ if (code < 0) return code; code = run_string(minst, ".runstdin", runFlush); if (code < 0) return code; if (minst->saved_pages_test_mode) { gx_device *pdev; /* get the current device */ pdev = gs_currentdevice(minst->i_ctx_p->pgs); if ((code = gx_saved_pages_param_process((gx_device_printer *)pdev, (byte *)"print normal flush", 18)) < 0) return code; if (code > 0) if ((code = gs_erasepage(minst->i_ctx_p->pgs)) < 0) return code; } break; case '-': /* run with command line args */ if (strncmp(arg, "debug=", 6) == 0) { code = gs_debug_flags_parse(minst->heap, arg+6); if (code < 0) return code; break; } else if (strncmp(arg, "saved-pages=", 12) == 0) { gx_device *pdev; gx_device_printer *ppdev; /* If init2 not yet done, just save the argument for processing then */ if (minst->init_done < 2) { if (minst->saved_pages_initial_arg == NULL) { /* Tuck the parameters away for later when init2 is done */ minst->saved_pages_initial_arg = (char *)arg+12; } else { outprintf(minst->heap, " Only one --saved-pages=... command allowed before processing input\n"); arg_finit(pal); return e_Fatal; } } else { /* get the current device */ pdev = gs_currentdevice(minst->i_ctx_p->pgs); if (dev_proc(pdev, dev_spec_op)(pdev, gxdso_supports_saved_pages, NULL, 0) == 0) { outprintf(minst->heap, " --saved-pages not supported by the '%s' device.\n", pdev->dname); arg_finit(pal); return e_Fatal; } ppdev = (gx_device_printer *)pdev; code = gx_saved_pages_param_process(ppdev, (byte *)arg+12, strlen(arg+12)); if (code > 0) if ((code = gs_erasepage(minst->i_ctx_p->pgs)) < 0) return code; } break; /* The following code is only to allow regression testing of saved-pages */ } else if (strncmp(arg, "saved-pages-test", 16) == 0) { minst->saved_pages_test_mode = true; break; } /* FALLTHROUGH */ case '+': pal->expand_ats = false; /* FALLTHROUGH */ case '@': /* ditto with @-expansion */ { const char *psarg = arg_next(pal, &code, minst->heap); if (code < 0) return e_Fatal; if (psarg == 0) { outprintf(minst->heap, "Usage: gs ... -%c file.ps arg1 ... argn\n", sw); arg_finit(pal); return e_Fatal; } psarg = arg_copy(psarg, minst->heap); if (psarg == NULL) code = e_Fatal; else code = gs_main_init2(minst); if (code >= 0) code = run_string(minst, "userdict/ARGUMENTS[", 0); if (code >= 0) while ((arg = arg_next(pal, &code, minst->heap)) != 0) { code = runarg(minst, "", arg, "", runInit); if (code < 0) break; } if (code >= 0) code = runarg(minst, "]put", psarg, ".runfile", runInit | runFlush); arg_free((char *)psarg, minst->heap); if (code >= 0) code = e_Quit; return code; } case 'A': /* trace allocator */ switch (*arg) { case 0: gs_alloc_debug = 1; break; case '-': gs_alloc_debug = 0; break; default: puts(minst->heap, "-A may only be followed by -"); return e_Fatal; } break; case 'B': /* set run_string buffer size */ if (*arg == '-') minst->run_buffer_size = 0; else { uint bsize; if (sscanf((const char *)arg, "%u", &bsize) != 1 || bsize <= 0 || bsize > MAX_BUFFERED_SIZE ) { outprintf(minst->heap, "-B must be followed by - or size between 1 and %u\n", MAX_BUFFERED_SIZE); return e_Fatal; } minst->run_buffer_size = bsize; } break; case 'c': /* code follows */ { bool ats = pal->expand_ats; code = gs_main_init2(minst); if (code < 0) return code; pal->expand_ats = false; while ((arg = arg_next(pal, &code, minst->heap)) != 0) { if (arg[0] == '@' || (arg[0] == '-' && !isdigit((unsigned char)arg[1])) ) break; code = runarg(minst, "", arg, ".runstring", runBuffer); if (code < 0) return code; } if (code < 0) return e_Fatal; if (arg != 0) { char *p = arg_copy(arg, minst->heap); if (p == NULL) return e_Fatal; arg_push_string(pal, p, true); } pal->expand_ats = ats; break; } case 'E': /* log errors */ switch (*arg) { case 0: gs_log_errors = 1; break; case '-': gs_log_errors = 0; break; default: puts(minst->heap, "-E may only be followed by -"); return e_Fatal; } break; case 'f': /* run file of arbitrary name */ if (*arg != 0) { code = argproc(minst, arg); if (code < 0) return code; if (minst->saved_pages_test_mode) { gx_device *pdev; /* get the current device */ pdev = gs_currentdevice(minst->i_ctx_p->pgs); return code; if ((code = gx_saved_pages_param_process((gx_device_printer *)pdev, (byte *)"print normal flush", 18)) < 0) return code; if (code > 0) if ((code = gs_erasepage(minst->i_ctx_p->pgs)) < 0) return code; } } break; case 'F': /* run file with buffer_size = 1 */ if (!*arg) { puts(minst->heap, "-F requires a file name"); return e_Fatal; } { uint bsize = minst->run_buffer_size; minst->run_buffer_size = 1; code = argproc(minst, arg); minst->run_buffer_size = bsize; if (code < 0) return code; if (minst->saved_pages_test_mode) { gx_device *pdev; /* get the current device */ pdev = gs_currentdevice(minst->i_ctx_p->pgs); if ((code = gx_saved_pages_param_process((gx_device_printer *)pdev, (byte *)"print normal flush", 18)) < 0) return code; if (code > 0) if ((code = gs_erasepage(minst->i_ctx_p->pgs)) < 0) return code; } } break; case 'g': /* define device geometry */ { long width, height; ref value; if ((code = gs_main_init1(minst)) < 0) return code; if (sscanf((const char *)arg, "%ldx%ld", &width, &height) != 2) { puts(minst->heap, "-g must be followed by x"); return e_Fatal; } make_int(&value, width); initial_enter_name("DEVICEWIDTH", &value); make_int(&value, height); initial_enter_name("DEVICEHEIGHT", &value); initial_enter_name("FIXEDMEDIA", &vtrue); break; } case 'h': /* print help */ case '?': /* ditto */ print_help(minst); return e_Info; /* show usage info on exit */ case 'I': /* specify search path */ { const char *path; if (arg[0] == 0) { path = arg_next(pal, &code, minst->heap); if (code < 0) return code; } else path = arg; if (path == NULL) return e_Fatal; path = arg_copy(path, minst->heap); if (path == NULL) return e_Fatal; gs_main_add_lib_path(minst, path); } break; case 'K': /* set malloc limit */ { long msize = 0; gs_malloc_memory_t *rawheap = gs_malloc_wrapped_contents(minst->heap); sscanf((const char *)arg, "%ld", &msize); if (msize <= 0 || msize > max_long >> 10) { outprintf(minst->heap, "-K must have 1 <= numK <= %ld\n", max_long >> 10); return e_Fatal; } rawheap->limit = msize << 10; } break; case 'M': /* set memory allocation increment */ { unsigned msize = 0; sscanf((const char *)arg, "%u", &msize); #if ARCH_INTS_ARE_SHORT if (msize <= 0 || msize >= 64) { puts(minst->heap, "-M must be between 1 and 63"); return e_Fatal; } #endif minst->memory_chunk_size = msize << 10; } break; case 'N': /* set size of name table */ { unsigned nsize = 0; sscanf((const char *)arg, "%d", &nsize); #if ARCH_INTS_ARE_SHORT if (nsize < 2 || nsize > 64) { puts(minst->heap, "-N must be between 2 and 64"); return e_Fatal; } #endif minst->name_table_size = (ulong) nsize << 10; } break; case 'o': /* set output file name and batch mode */ { const char *adef; char *str; ref value; int len; if (arg[0] == 0) { adef = arg_next(pal, &code, minst->heap); if (code < 0) return code; } else adef = arg; if ((code = gs_main_init1(minst)) < 0) return code; len = strlen(adef); str = (char *)gs_alloc_bytes(minst->heap, (uint)len, "-o"); if (str == NULL) return e_VMerror; memcpy(str, adef, len); make_const_string(&value, a_readonly | avm_foreign, len, (const byte *)str); initial_enter_name("OutputFile", &value); initial_enter_name("NOPAUSE", &vtrue); initial_enter_name("BATCH", &vtrue); } break; case 'P': /* choose whether search '.' first */ if (!strcmp(arg, "")) minst->search_here_first = true; else if (!strcmp(arg, "-")) minst->search_here_first = false; else { puts(minst->heap, "Only -P or -P- is allowed."); return e_Fatal; } break; case 'q': /* quiet startup */ if ((code = gs_main_init1(minst)) < 0) return code; initial_enter_name("QUIET", &vtrue); break; case 'r': /* define device resolution */ { float xres, yres; ref value; if ((code = gs_main_init1(minst)) < 0) return code; switch (sscanf((const char *)arg, "%fx%f", &xres, &yres)) { default: puts(minst->heap, "-r must be followed by or x"); return e_Fatal; case 1: /* -r */ yres = xres; case 2: /* -rx */ make_real(&value, xres); initial_enter_name("DEVICEXRESOLUTION", &value); make_real(&value, yres); initial_enter_name("DEVICEYRESOLUTION", &value); initial_enter_name("FIXEDRESOLUTION", &vtrue); } break; } case 'D': /* define name */ case 'd': case 'S': /* define name as string */ case 's': { char *adef = arg_copy(arg, minst->heap); char *eqp; bool isd = (sw == 'D' || sw == 'd'); ref value; if (adef == NULL) return e_Fatal; eqp = strchr(adef, '='); if (eqp == NULL) eqp = strchr(adef, '#'); /* Initialize the object memory, scanner, and */ /* name table now if needed. */ if ((code = gs_main_init1(minst)) < 0) return code; if (eqp == adef) { puts(minst->heap, "Usage: -dNAME, -dNAME=TOKEN, -sNAME=STRING"); return e_Fatal; } if (eqp == NULL) { if (isd) make_true(&value); else make_empty_string(&value, a_readonly); } else { int code; i_ctx_t *i_ctx_p = minst->i_ctx_p; uint space = icurrent_space; *eqp++ = 0; ialloc_set_space(idmemory, avm_system); if (isd) { int num, i; /* Check for numbers so we can provide for suffix scalers */ /* Note the check for '#' is for PS "radix" numbers such as 16#ff */ /* and check for '.' and 'e' or 'E' which are 'real' numbers */ if ((strchr(eqp, '#') == NULL) && (strchr(eqp, '.') == NULL) && (strchr(eqp, 'e') == NULL) && (strchr(eqp, 'E') == NULL) && ((i = sscanf((const char *)eqp, "%d", &num)) == 1)) { char suffix = eqp[strlen(eqp) - 1]; switch (suffix) { case 'k': case 'K': num *= 1024; break; case 'm': case 'M': num *= 1024 * 1024; break; case 'g': case 'G': /* caveat emptor: more than 2g will overflow */ /* and really should produce a 'real', so don't do this */ num *= 1024 * 1024 * 1024; break; default: break; /* not a valid suffix or last char was digit */ } make_int(&value, num); } else { /* use the PS scanner to capture other valid token types */ stream astream; scanner_state state; s_init(&astream, NULL); sread_string(&astream, (const byte *)eqp, strlen(eqp)); gs_scanner_init_stream(&state, &astream); code = gs_scan_token(minst->i_ctx_p, &value, &state); if (code) { outprintf(minst->heap, "Invalid value for option -d%s, -dNAME= must be followed by a valid token\n", arg); return e_Fatal; } if (r_has_type_attrs(&value, t_name, a_executable)) { ref nsref; name_string_ref(minst->heap, &value, &nsref); #undef string_is #define string_is(nsref, str, len)\ (r_size(&(nsref)) == (len) &&\ !strncmp((const char *)(nsref).value.const_bytes, str, (len))) if (string_is(nsref, "null", 4)) make_null(&value); else if (string_is(nsref, "true", 4)) make_true(&value); else if (string_is(nsref, "false", 5)) make_false(&value); else { outprintf(minst->heap, "Invalid value for option -d%s, use -sNAME= to define string constants\n", arg); return e_Fatal; } } } } else { int len = strlen(eqp); char *str = (char *)gs_alloc_bytes(minst->heap, (uint) len, "-s"); if (str == 0) { lprintf("Out of memory!\n"); return e_Fatal; } memcpy(str, eqp, len); make_const_string(&value, a_readonly | avm_foreign, len, (const byte *)str); if ((code = try_stdout_redirect(minst, adef, eqp)) < 0) return code; } ialloc_set_space(idmemory, space); } /* Enter the name in systemdict. */ initial_enter_name(adef, &value); break; } case 'T': set_debug_flags(arg, vd_flags); break; case 'u': /* undefine name */ if (!*arg) { puts(minst->heap, "-u requires a name to undefine."); return e_Fatal; } if ((code = gs_main_init1(minst)) < 0) return code; i_initial_remove_name(minst->i_ctx_p, arg); break; case 'v': /* print revision */ print_revision(minst); return e_Info; /*#ifdef DEBUG */ /* * Here we provide a place for inserting debugging code that can be * run in place of the normal interpreter code. */ case 'X': code = gs_main_init2(minst); if (code < 0) return code; { int xec; /* exit_code */ ref xeo; /* error_object */ #define start_x()\ gs_main_run_string_begin(minst, 1, &xec, &xeo) #define run_x(str)\ gs_main_run_string_continue(minst, str, strlen(str), 1, &xec, &xeo) #define stop_x()\ gs_main_run_string_end(minst, 1, &xec, &xeo) start_x(); run_x("\216\003abc"); run_x("== flush\n"); stop_x(); } return e_Quit; /*#endif */ case 'Z': set_debug_flags(arg, gs_debug); break; } return 0; } /* Define versions of strlen and strcat that encode strings in hex. */ /* This is so we can enter escaped characters regardless of whether */ /* the Level 1 convention of ignoring \s in strings-within-strings */ /* is being observed (sigh). */ static int esc_strlen(const char *str) { return strlen(str) * 2 + 2; } static void esc_strcat(char *dest, const char *src) { char *d = dest + strlen(dest); const char *p; static const char *const hex = "0123456789abcdef"; *d++ = '<'; for (p = src; *p; p++) { byte c = (byte) * p; *d++ = hex[c >> 4]; *d++ = hex[c & 0xf]; } *d++ = '>'; *d = 0; } /* Process file names */ static int argproc(gs_main_instance * minst, const char *arg) { int code = gs_main_init1(minst); /* need i_ctx_p to proceed */ if (code < 0) return code; if (minst->run_buffer_size) { /* Run file with run_string. */ return run_buffered(minst, arg); } else { /* Run file directly in the normal way. */ return runarg(minst, "", arg, ".runfile", runInit | runFlush); } } static int run_buffered(gs_main_instance * minst, const char *arg) { FILE *in = gp_fopen(arg, gp_fmode_rb); int exit_code; ref error_object; int code; if (in == 0) { outprintf(minst->heap, "Unable to open %s for reading", arg); return_error(e_invalidfileaccess); } code = gs_main_init2(minst); if (code < 0) { fclose(in); return code; } code = gs_main_run_string_begin(minst, minst->user_errors, &exit_code, &error_object); if (!code) { char buf[MAX_BUFFERED_SIZE]; int count; code = e_NeedInput; while ((count = fread(buf, 1, minst->run_buffer_size, in)) > 0) { code = gs_main_run_string_continue(minst, buf, count, minst->user_errors, &exit_code, &error_object); if (code != e_NeedInput) break; } if (code == e_NeedInput) { code = gs_main_run_string_end(minst, minst->user_errors, &exit_code, &error_object); } } fclose(in); zflush(minst->i_ctx_p); zflushpage(minst->i_ctx_p); return run_finish(minst, code, exit_code, &error_object); } static int runarg(gs_main_instance * minst, const char *pre, const char *arg, const char *post, int options) { int len = strlen(pre) + esc_strlen(arg) + strlen(post) + 1; int code; char *line; if (options & runInit) { code = gs_main_init2(minst); /* Finish initialization */ if (code < 0) return code; } line = (char *)gs_alloc_bytes(minst->heap, len, "runarg"); if (line == 0) { lprintf("Out of memory!\n"); return_error(e_VMerror); } strcpy(line, pre); esc_strcat(line, arg); strcat(line, post); /* If we're running PS from a buffer (i.e. from the "-c" option we don't want lib_file_open() to search the current directory during this call to run_string() */ if ((options & runBuffer)) { minst->i_ctx_p->starting_arg_file = false; } else { minst->i_ctx_p->starting_arg_file = true; } code = run_string(minst, line, options); minst->i_ctx_p->starting_arg_file = false; gs_free_object(minst->heap, line, "runarg"); return code; } static int run_string(gs_main_instance * minst, const char *str, int options) { int exit_code; ref error_object; int code = gs_main_run_string(minst, str, minst->user_errors, &exit_code, &error_object); if ((options & runFlush) || code != 0) { zflush(minst->i_ctx_p); /* flush stdout */ zflushpage(minst->i_ctx_p); /* force display update */ } return run_finish(minst, code, exit_code, &error_object); } static int run_finish(gs_main_instance *minst, int code, int exit_code, ref * perror_object) { switch (code) { case e_Quit: case 0: break; case e_Fatal: emprintf1(minst->heap, "Unrecoverable error, exit code %d\n", exit_code); break; default: gs_main_dump_stack(minst, code, perror_object); } return code; } /* Redirect stdout to a file: * -sstdout=filename * -sstdout=- * -sstdout=%stdout * -sstdout=%stderr * -sOutputFile=- is not affected. * File is closed at program exit (if not stdout/err) * or when -sstdout is used again. */ static int try_stdout_redirect(gs_main_instance * minst, const char *command, const char *filename) { if (strcmp(command, "stdout") == 0) { minst->heap->gs_lib_ctx->stdout_to_stderr = 0; minst->heap->gs_lib_ctx->stdout_is_redirected = 0; /* If stdout already being redirected and it is not stdout * or stderr, close it */ if (minst->heap->gs_lib_ctx->fstdout2 && (minst->heap->gs_lib_ctx->fstdout2 != minst->heap->gs_lib_ctx->fstdout) && (minst->heap->gs_lib_ctx->fstdout2 != minst->heap->gs_lib_ctx->fstderr)) { fclose(minst->heap->gs_lib_ctx->fstdout2); minst->heap->gs_lib_ctx->fstdout2 = (FILE *)NULL; } /* If stdout is being redirected, set minst->fstdout2 */ if ( (filename != 0) && strlen(filename) && strcmp(filename, "-") && strcmp(filename, "%stdout") ) { if (strcmp(filename, "%stderr") == 0) { minst->heap->gs_lib_ctx->stdout_to_stderr = 1; } else if ((minst->heap->gs_lib_ctx->fstdout2 = gp_fopen(filename, "w")) == (FILE *)NULL) return_error(e_invalidfileaccess); minst->heap->gs_lib_ctx->stdout_is_redirected = 1; } return 0; } return 1; } /* ---------------- Print information ---------------- */ /* * Help strings. We have to break them up into parts, because * the Watcom compiler has a limit of 510 characters for a single token. * For PC displays, we want to limit the strings to 24 lines. */ static const char help_usage1[] = "\ Usage: gs [switches] [file1.ps file2.ps ...]\n\ Most frequently used switches: (you can use # in place of =)\n\ -dNOPAUSE no pause after page | -q `quiet', fewer messages\n\ -gx page size in pixels | -r pixels/inch resolution\n"; static const char help_usage2[] = "\ -sDEVICE= select device | -dBATCH exit after last file\n\ -sOutputFile= select output file: - for stdout, |command for pipe,\n\ embed %d or %ld for page #\n"; #ifdef DEBUG static const char help_debug[] = "\ --debug=