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/* This file is part of the GNU plotutils package. Copyright (C) 1989,
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1990, 1991, 1995, 1996, 1997, 1998, 1999, 2000, 2005, Free Software
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The GNU plotutils package is free software. You may redistribute it
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and/or modify it under the terms of the GNU General Public License as
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published by the Free Software foundation; either version 2, or (at your
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option) any later version.
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The GNU plotutils package is distributed in the hope that it will be
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useful, but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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General Public License for more details.
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You should have received a copy of the GNU General Public License along
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with the GNU plotutils package; see the file COPYING. If not, write to
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the Free Software Foundation, Inc., 51 Franklin St., Fifth Floor,
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Boston, MA 02110-1301, USA. */
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/* This file is the driving routine for the GNU `plot' program. It
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includes code to read a stream of commands, in GNU metafile format, and
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call libplot functions to draw the graphics.
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Copyright (C) 1989-2000 Free Software Foundation, Inc. */
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call libplot functions to draw the graphics. */
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#include "sys-defines.h"
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#include "libcommon.h"
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/* Obsolete op codes (no longer listed in plot.h) */
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#define O_COLOR 'C'
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const char *progname = "plot"; /* name of this program */
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const char *written = "Written by Robert S. Maier.";
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const char *copyright = "Copyright (C) 2005 Free Software Foundation, Inc.";
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const char *usage_appendage = " [FILE]...\n\
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With no FILE, or when FILE is -, read standard input.\n";
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of erase()) from the output */
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bool merge_pages = false;
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/* Long options we recognize */
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#define ARG_REQUIRED 1
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#define ARG_OPTIONAL 2
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const char *optstring = "shlAIOp:F:f:W:T:";
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struct option long_options[] =
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/* The most important option */
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{ "display-type", ARG_REQUIRED, NULL, 'T'},
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/* The most important option ("--display-type" is an obsolete variant) */
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{ "output-format", ARG_REQUIRED, NULL, 'T'},
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{ "display-type", ARG_REQUIRED, NULL, 'T' << 8 }, /* hidden */
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/* Other frequently used options */
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{ "font-name", ARG_REQUIRED, NULL, 'F' },
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{ "font-size", ARG_REQUIRED, NULL, 'f' },
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{ NULL, 0, NULL, 0}
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/* null-terminated list of options that we don't show to the user */
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int hidden_options[] = { (int)'I', 0 };
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/* null-terminated list of options, such as obsolete-but-still-maintained
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options or undocumented options, which we don't show to the user */
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const int hidden_options[] = { (int)'I', (int)('T' << 8), 0 };
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/* forward references */
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bool read_plot ____P((plPlotter *plotter, FILE *in_stream));
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char *read_string ____P((FILE *input, bool *badstatus));
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double read_float ____P((FILE *input, bool *badstatus));
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double read_int ____P((FILE *input, bool *badstatus));
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int maybe_closepl ____P((plPlotter *plotter));
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int maybe_openpl ____P((plPlotter *plotter));
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int read_true_int ____P((FILE *input, bool *badstatus));
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unsigned char read_byte_as_unsigned_char ____P((FILE *input, bool *badstatus));
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unsigned int read_byte_as_unsigned_int ____P((FILE *input, bool *badstatus));
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extern int display_fonts ____P((const char *display_type, const char *progname));
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extern int list_fonts ____P((const char *display_type, const char *progname));
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extern void display_usage ____P((const char *progname, const int *omit_vals, const char *appendage, bool fonts));
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extern void display_version ____P((const char *progname));
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extern voidptr_t xcalloc ____P ((size_t nmemb, size_t size));
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extern voidptr_t xmalloc ____P ((size_t size));
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extern voidptr_t xrealloc ____P ((voidptr_t p, size_t length));
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extern char *xstrdup ____P ((const char *s));
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bool read_plot (plPlotter *plotter, FILE *in_stream);
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char *read_string (FILE *input, bool *badstatus);
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double read_float (FILE *input, bool *badstatus);
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double read_int (FILE *input, bool *badstatus);
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int maybe_closepl (plPlotter *plotter);
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int maybe_openpl (plPlotter *plotter);
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int read_true_int (FILE *input, bool *badstatus);
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unsigned char read_byte_as_unsigned_char (FILE *input, bool *badstatus);
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unsigned int read_byte_as_unsigned_int (FILE *input, bool *badstatus);
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main (int argc, char *argv[])
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plPlotter *plotter;
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plPlotterParams *plotter_params;
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bool show_fonts = false; /* supply help on fonts? */
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bool show_usage = false; /* show usage message? */
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bool show_version = false; /* show version message? */
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char *display_type = (char *)"meta"; /* default libplot output format */
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char *output_format = (char *)"meta"; /* default libplot output format */
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int errcnt = 0; /* errors encountered */
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int local_page_number; /* temporary storage */
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int opt_index; /* long option index */
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int retval; /* return value */
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plotter_params = pl_newplparams ();
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while ((option = getopt_long (argc, argv, "shlAIOp:F:f:W:T:", long_options, &opt_index)) != EOF)
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while ((option = getopt_long (argc, argv, optstring, long_options, &opt_index)) != EOF)
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option = long_options[opt_index].val;
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case 'T': /* Display type, ARG REQUIRED */
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display_type = (char *)xmalloc (strlen (optarg) + 1);
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strcpy (display_type, optarg);
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case 'T': /* Output format, ARG REQUIRED */
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output_format = (char *)xmalloc (strlen (optarg) + 1);
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strcpy (output_format, optarg);
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case 'O': /* Ascii output */
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pl_setplparam (plotter_params, "META_PORTABLE", (voidptr_t)"yes");
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pl_setplparam (plotter_params, "META_PORTABLE", (void *)"yes");
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case 'F': /* set the initial font */
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font_name = (char *)xmalloc (strlen (optarg) + 1);
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strcpy (font_name, optarg);
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case 'e' << 8: /* emulate color by grayscale */
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pl_setplparam (plotter_params, "EMULATE_COLOR", (voidptr_t)optarg);
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pl_setplparam (plotter_params, "EMULATE_COLOR", (void *)optarg);
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case 'C' << 8: /* set the initial pen color */
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pen_color = (char *)xmalloc (strlen (optarg) + 1);
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strcpy (bg_color, optarg);
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case 'B' << 8: /* Bitmap size */
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pl_setplparam (plotter_params, "BITMAPSIZE", (voidptr_t)optarg);
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pl_setplparam (plotter_params, "BITMAPSIZE", (void *)optarg);
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case 'P' << 8: /* Page size */
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pl_setplparam (plotter_params, "PAGESIZE", (voidptr_t)optarg);
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pl_setplparam (plotter_params, "PAGESIZE", (void *)optarg);
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case 'f': /* set the initial fontsize */
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user_specified_input_format = GNU_OLD_PORTABLE;
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case 'r' << 8: /* Plot rotation angle, ARG REQUIRED */
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pl_setplparam (plotter_params, "ROTATION", (voidptr_t)optarg);
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pl_setplparam (plotter_params, "ROTATION", (void *)optarg);
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case 'M' << 8: /* Max line length */
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pl_setplparam (plotter_params, "MAX_LINE_LENGTH", (voidptr_t)optarg);
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pl_setplparam (plotter_params, "MAX_LINE_LENGTH", (void *)optarg);
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case 's': /* Merge pages */
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merge_pages = true;
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/* select user-specified background color */
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pl_setplparam (plotter_params, "BG_COLOR", (voidptr_t)bg_color);
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pl_setplparam (plotter_params, "BG_COLOR", (void *)bg_color);
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if ((plotter = pl_newpl_r (display_type, NULL, stdout, stderr,
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if ((plotter = pl_newpl_r (output_format, NULL, stdout, stderr,
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plotter_params)) == NULL)
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fprintf (stderr, "%s: error: could not create plot device\n", progname);
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the file. Return value indicates whether stream was parsed
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read_plot (plPlotter *plotter, FILE *in_stream)
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read_plot (plotter, in_stream)
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bool argerr = false; /* error occurred while reading argument? */
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bool display_open = false; /* display device open? */
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string, with \0 replacing \n, is allocated on the heap and may be
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read_string (FILE *input, bool *badstatus)
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read_string (input, badstatus)
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int length = 0, buffer_length = 16; /* initial length */
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plot/plot.c
