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545
src/cmd/postscript/download/download.c
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545
src/cmd/postscript/download/download.c
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/*
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*
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* download - host resident font downloader
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*
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* Prepends host resident fonts to PostScript input files. The program assumes
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* the input files are part of a single PostScript job and that requested fonts
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* can be downloaded at the start of each input file. Downloaded fonts are the
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* ones named in a %%DocumentFonts: comment and listed in a special map table.
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* Map table pathnames (supplied using the -m option) that begin with a / are
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* taken as is. Otherwise the final pathname is built using *hostfontdir (-H
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* option), *mapname (-m option), and *suffix.
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*
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* The map table consists of fontname-filename pairs, separated by white space.
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* Comments are introduced by % (as in PostScript) and extend to the end of the
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* current line. The only fonts that can be downloaded are the ones listed in
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* the active map table that point the program to a readable Unix file. A request
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* for an unlisted font or inaccessible file is ignored. All font requests are
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* ignored if the map table can't be read. In that case the program simply copies
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* the input files to stdout.
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*
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* An example (but not one to follow) of what can be in a map table is,
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*
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* %
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* % Map requests for Bookman-Light to file *hostfontdir/KR
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* %
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*
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* Bookman-Light KR % Keeping everything (including the map
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* % table) in *hostfontdir seems like the
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* % cleanest approach.
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*
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* %
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* % Map Palatino-Roman to file *hostfontdir/palatino/Roman
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* %
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* Palatino-Roman palatino/Roman
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*
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* % Map ZapfDingbats to file /usr/lib/host/dingbats
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*
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* ZapfDingbats /usr/lib/host/dingbats
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*
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* Once again, file names that begin with a / are taken as is. All others have
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* *hostfontdir/ prepended to the file string associated with a particular font.
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*
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* Map table can be associated with a printer model (e.g. a LaserWriter), a
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* printer destination, or whatever - the choice is up to an administrator.
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* By destination may be best if your spooler is running several private
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* printers. Host resident fonts are usually purchased under a license that
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* restricts their use to a limited number of printers. A font licensed for
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* a single printer should only be used on that printer.
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*
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* Was written quickly, so there's much room for improvement. Undoubtedly should
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* be a more general program (e.g. scan for other comments).
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*
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*/
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#include <stdio.h>
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#include <signal.h>
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#include <sys/types.h>
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#include <fcntl.h>
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#include <sys/stat.h>
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#include <string.h>
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#include "comments.h" /* PostScript file structuring comments */
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#include "gen.h" /* general purpose definitions */
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#include "path.h" /* for temporary directory */
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#include "ext.h" /* external variable declarations */
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#include "download.h" /* a few special definitions */
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char *temp_dir = TEMPDIR; /* temp directory - for copying stdin */
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char *hostfontdir = HOSTDIR; /* host resident directory */
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char *mapname = "map"; /* map table - usually in *hostfontdir */
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char *suffix = ""; /* appended to the map table pathname */
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Map *map = NULL; /* device font map table */
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char *stringspace = NULL; /* for storing font and file strings */
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int next = 0; /* next free slot in map[] */
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char *residentfonts = NULL; /* list of printer resident fonts */
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char *printer = NULL; /* printer name - only for Unix 4.0 lp */
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char buf[2048]; /* input file line buffer */
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char *comment = DOCUMENTFONTS; /* look for this comment */
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int atend = FALSE; /* TRUE only if a comment says so */
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FILE *fp_in; /* next input file */
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FILE *fp_temp = NULL; /* for copying stdin */
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/*****************************************************************************/
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main(agc, agv)
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int agc;
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char *agv[];
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{
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/*
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*
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* Host resident font downloader. The input files are assumed to be part of a
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* single PostScript job.
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*
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*/
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fp_in = stdin;
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argc = agc; /* other routines may want them */
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argv = agv;
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prog_name = argv[0]; /* just for error messages */
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init_signals(); /* sets up interrupt handling */
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options(); /* first get command line options */
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readmap(); /* read the font map table */
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readresident(); /* and the optional resident font list */
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arguments(); /* then process non-option arguments */
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done(); /* and clean things up */
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exit(x_stat); /* not much could be wrong */
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} /* End of main */
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/*****************************************************************************/
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init_signals()
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{
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/*
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*
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* Makes sure we handle interrupts properly.
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*
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*/
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if ( signal(SIGINT, interrupt) == SIG_IGN ) {
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signal(SIGINT, SIG_IGN);
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signal(SIGQUIT, SIG_IGN);
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signal(SIGHUP, SIG_IGN);
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} else {
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signal(SIGHUP, interrupt);
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signal(SIGQUIT, interrupt);
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} /* End else */
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signal(SIGTERM, interrupt);
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} /* End of init_signals */
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/*****************************************************************************/
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options()
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{
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int ch; /* return value from getopt() */
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char *optnames = "c:fm:p:r:H:T:DI";
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extern char *optarg; /* used by getopt() */
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extern int optind;
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/*
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*
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* Reads and processes the command line options.
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*
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*/
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while ( (ch = getopt(argc, argv, optnames)) != EOF ) {
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switch ( ch ) {
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case 'c': /* look for this comment */
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comment = optarg;
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break;
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case 'f': /* force a complete input file scan */
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atend = TRUE;
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break;
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case 'm': /* printer map table name */
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mapname = optarg;
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break;
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case 'p': /* printer name - for Unix 4.0 lp */
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printer = optarg;
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break;
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case 'r': /* resident font list */
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residentfonts = optarg;
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break;
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case 'H': /* host resident font directory */
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hostfontdir = optarg;
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break;
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case 'T': /* temporary file directory */
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temp_dir = optarg;
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break;
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case 'D': /* debug flag */
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debug = ON;
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break;
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case 'I': /* ignore FATAL errors */
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ignore = ON;
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break;
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case '?': /* don't understand the option */
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error(FATAL, "");
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break;
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default: /* don't know what to do for ch */
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error(FATAL, "missing case for option %c\n", ch);
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break;
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} /* End switch */
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} /* End while */
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argc -= optind; /* get ready for non-option args */
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argv += optind;
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} /* End of options */
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/*****************************************************************************/
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readmap()
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{
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char *path;
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char *ptr;
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int fd;
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struct stat sbuf;
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/*
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*
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* Initializes the map table by reading an ASCII mapping file. If mapname begins
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* with a / it's the map table. Otherwise hostfontdir, mapname, and suffix are
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* combined to build the final pathname. If we can open the file we read it all
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* into memory, erase comments, and separate the font and file name pairs. When
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* we leave next points to the next free slot in the map[] array. If it's zero
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* nothing was in the file or we couldn't open it.
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*
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*/
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if ( hostfontdir == NULL || mapname == NULL )
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return;
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if ( *mapname != '/' ) {
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if ( (path = (char *)malloc(strlen(hostfontdir) + strlen(mapname) +
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strlen(suffix) + 2)) == NULL )
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error(FATAL, "no memory");
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sprintf(path, "%s/%s%s", hostfontdir, mapname, suffix);
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} else path = mapname;
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if ( (fd = open(unsharp(path), 0)) != -1 ) {
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if ( fstat(fd, &sbuf) == -1 )
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error(FATAL, "can't fstat %s", path);
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if ( (stringspace = (char *)malloc(sbuf.st_size + 2)) == NULL )
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error(FATAL, "no memory");
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if ( read(fd, stringspace, sbuf.st_size) == -1 )
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error(FATAL, "can't read %s", path);
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close(fd);
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stringspace[sbuf.st_size] = '\n'; /* just to be safe */
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stringspace[sbuf.st_size+1] = '\0';
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for ( ptr = stringspace; *ptr != '\0'; ptr++ ) /* erase comments */
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if ( *ptr == '%' )
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for ( ; *ptr != '\n' ; ptr++ )
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*ptr = ' ';
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for ( ptr = stringspace; ; next++ ) {
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if ( (next % 50) == 0 )
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map = allocate(map, next+50);
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map[next].downloaded = FALSE;
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map[next].font = strtok(ptr, " \t\n");
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map[next].file = strtok(ptr = NULL, " \t\n");
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if ( map[next].font == NULL )
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break;
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if ( map[next].file == NULL )
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error(FATAL, "map table format error - check %s", path);
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} /* End for */
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} /* End if */
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} /* End of readmap */
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/*****************************************************************************/
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readresident()
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{
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FILE *fp;
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char *path;
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int ch;
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int n;
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/*
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*
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* Reads a file that lists the resident fonts for a particular printer and marks
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* each font as already downloaded. Nothing's done if the file can't be read or
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* there's no mapping file. Comments, as in the map file, begin with a % and
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* extend to the end of the line. Added for Unix 4.0 lp.
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*
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*/
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if ( next == 0 || (printer == NULL && residentfonts == NULL) )
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return;
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if ( printer != NULL ) { /* use Unix 4.0 lp pathnames */
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sprintf(buf, "%s/printers/%s", HOSTDIR, printer);
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path = buf;
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} else path = residentfonts;
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if ( (fp = fopen(unsharp(path), "r")) != NULL ) {
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while ( fscanf(fp, "%s", buf) != EOF )
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if ( buf[0] == '%' )
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while ( (ch = getc(fp)) != EOF && ch != '\n' ) ;
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else if ( (n = lookup(buf)) < next )
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map[n].downloaded = TRUE;
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fclose(fp);
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} /* End if */
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} /* End of readresident */
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/*****************************************************************************/
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arguments()
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{
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/*
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*
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* Makes sure all the non-option command line arguments are processed. If we get
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* here and there aren't any arguments left, or if '-' is one of the input files
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* we'll translate stdin. Assumes input files are part of a single PostScript
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* job and fonts can be downloaded at the start of each file.
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*
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*/
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if ( argc < 1 )
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download();
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else {
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while ( argc > 0 ) {
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fp_temp = NULL;
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if ( strcmp(*argv, "-") == 0 )
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fp_in = stdin;
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else if ( (fp_in = fopen(unsharp(*argv), "r")) == NULL )
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error(FATAL, "can't open %s", *argv);
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download();
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if ( fp_in != stdin )
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fclose(fp_in);
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if ( fp_temp != NULL )
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fclose(fp_temp);
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argc--;
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argv++;
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} /* End while */
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} /* End else */
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} /* End of arguments */
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/*****************************************************************************/
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done()
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{
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/*
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*
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* Clean things up before we quit.
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*
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*/
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if ( temp_file != NULL )
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unlink(temp_file);
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} /* End of done */
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/*****************************************************************************/
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download()
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{
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int infontlist = FALSE;
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/*
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*
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* If next is zero the map table is empty and all we do is copy the input file
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* to stdout. Otherwise we read the input file looking for %%DocumentFonts: or
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* continuation comments, add any accessible fonts to the output file, and then
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* append the input file. When reading stdin we append lines to fp_temp and
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* recover them when we're ready to copy the input file. fp_temp will often
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* only contain part of stdin - if there's no %%DocumentFonts: (atend) comment
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* we stop reading fp_in after the header.
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*
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*/
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if ( next > 0 ) {
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if ( fp_in == stdin ) {
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if ( (temp_file = tempnam(temp_dir, "post")) == NULL )
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error(FATAL, "can't generate temp file name");
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if ( (fp_temp = fopen(temp_file, "w+r")) == NULL )
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error(FATAL, "can't open %s", temp_file);
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unlink(temp_file);
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} /* End if */
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while ( fgets(buf, sizeof(buf), fp_in) != NULL ) {
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if ( fp_temp != NULL )
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fprintf(fp_temp, "%s", buf);
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if ( buf[0] != '%' || buf[1] != '%' ) {
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if ( (buf[0] != '%' || buf[1] != '!') && atend == FALSE )
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break;
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infontlist = FALSE;
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} else if ( strncmp(buf, comment, strlen(comment)) == 0 ) {
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copyfonts(buf);
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infontlist = TRUE;
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} else if ( buf[2] == '+' && infontlist == TRUE )
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copyfonts(buf);
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else infontlist = FALSE;
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} /* End while */
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} /* End if */
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copyinput();
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} /* End of download */
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/*****************************************************************************/
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copyfonts(list)
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char *list;
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{
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char *font;
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char *path;
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int n;
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/*
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*
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* list points to a %%DocumentFonts: or continuation comment. What follows the
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* the keyword will be a list of fonts separated by white space (or (atend)).
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* Look for each font in the map table and if it's found copy the font file to
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* stdout (once only).
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*
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*/
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strtok(list, " \n"); /* skip to the font list */
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while ( (font = strtok(NULL, " \t\n")) != NULL ) {
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if ( strcmp(font, ATEND) == 0 ) {
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atend = TRUE;
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break;
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} /* End if */
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if ( (n = lookup(font)) < next ) {
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if ( *map[n].file != '/' ) {
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if ( (path = (char *)malloc(strlen(hostfontdir)+strlen(map[n].file)+2)) == NULL )
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error(FATAL, "no memory");
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sprintf(path, "%s/%s", hostfontdir, map[n].file);
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cat(unsharp(path));
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free(path);
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} else cat(unsharp(map[n].file));
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map[n].downloaded = TRUE;
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} /* End if */
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} /* End while */
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} /* End of copyfonts */
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/*****************************************************************************/
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copyinput()
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{
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/*
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*
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* Copies the input file to stdout. If fp_temp isn't NULL seek to the start and
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* add it to the output file - it's a partial (or complete) copy of stdin made
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* by download(). Then copy fp_in, but only seek to the start if it's not stdin.
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*
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*/
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if ( fp_temp != NULL ) {
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fseek(fp_temp, 0L, 0);
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while ( fgets(buf, sizeof(buf), fp_temp) != NULL )
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printf("%s", buf);
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} /* End if */
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if ( fp_in != stdin )
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fseek(fp_in, 0L, 0);
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while ( fgets(buf, sizeof(buf), fp_in) != NULL )
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printf("%s", buf);
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} /* End of copyinput */
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/*****************************************************************************/
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lookup(font)
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char *font;
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{
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int i;
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/*
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*
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* Looks for *font in the map table. Return the map table index if found and
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* not yet downloaded - otherwise return next.
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*
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*/
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for ( i = 0; i < next; i++ )
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if ( strcmp(font, map[i].font) == 0 ) {
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if ( map[i].downloaded == TRUE )
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i = next;
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break;
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} /* End if */
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return(i);
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} /* End of lookup */
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/*****************************************************************************/
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Map *allocate(ptr, num)
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Map *ptr;
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int num;
|
||||
|
||||
{
|
||||
|
||||
/*
|
||||
*
|
||||
* Allocates space for num Map elements. Calls malloc() if ptr is NULL and
|
||||
* realloc() otherwise.
|
||||
*
|
||||
*/
|
||||
|
||||
if ( ptr == NULL )
|
||||
ptr = (Map *)malloc(num * sizeof(Map));
|
||||
else ptr = (Map *)realloc(ptr, num * sizeof(Map));
|
||||
|
||||
if ( ptr == NULL )
|
||||
error(FATAL, "no map memory");
|
||||
|
||||
return(ptr);
|
||||
|
||||
} /* End of allocate */
|
||||
|
||||
/*****************************************************************************/
|
||||
|
||||
Loading…
Add table
Add a link
Reference in a new issue