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- /* Copyright (C) 1997 Aladdin Enterprises. All rights reserved.
-
- This file is part of Aladdin Ghostscript.
-
- Aladdin Ghostscript is distributed with NO WARRANTY OF ANY KIND. No author
- or distributor accepts any responsibility for the consequences of using it,
- or for whether it serves any particular purpose or works at all, unless he
- or she says so in writing. Refer to the Aladdin Ghostscript Free Public
- License (the "License") for full details.
-
- Every copy of Aladdin Ghostscript must include a copy of the License,
- normally in a plain ASCII text file named PUBLIC. The License grants you
- the right to copy, modify and redistribute Aladdin Ghostscript, but only
- under certain conditions described in the License. Among other things, the
- License requires that the copyright notice and this notice be preserved on
- all copies.
- */
-
- /* gsargs.h */
- /* Command line argument list management */
-
- #ifndef gsargs_INCLUDED
- # define gsargs_INCLUDED
-
- /*
- * We need to handle recursion into @-files.
- * The following structures keep track of the state.
- * Defining a maximum argument length and a maximum nesting depth
- * decreases generality, but eliminates the need for dynamic allocation.
- */
- #define arg_str_max 512
- #define arg_depth_max 10
- typedef struct arg_source_s {
- bool is_file;
- union _u {
- const char *str;
- FILE *file;
- } u;
- } arg_source;
- typedef struct arg_list_s {
- bool expand_ats; /* if true, expand @-files */
- FILE *(*arg_fopen)(P2(const char *fname, void *fopen_data));
- void *fopen_data;
- const char **argp;
- int argn;
- int depth; /* depth of @-files */
- char cstr[arg_str_max + 1];
- arg_source sources[arg_depth_max];
- } arg_list;
-
- /* Initialize an arg list. */
- void arg_init(P5(arg_list *pal, const char **argv, int argc,
- FILE *(*arg_fopen)(P2(const char *fname, void *fopen_data)),
- void *fopen_data));
-
- /* Push a string onto an arg list. */
- /* This may also be used (once) to "unread" the last argument. */
- void arg_push_string(P2(arg_list *pal, const char *str));
-
- /* Clean up an arg list before exiting. */
- void arg_finit(P1(arg_list *pal));
-
- /* Get the next arg from a list. */
- /* Note that these are not copied to the heap. */
- const char *arg_next(P1(arg_list *pal));
-
- /* Copy an argument string to the heap. */
- char *arg_copy(P2(const char *str, gs_memory_t *mem));
-
- #endif /* gsargs_INCLUDED */
-