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figlet.c
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figlet.c
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/****************************************************************************
FIGlet Copyright 1991, 1993, 1994 Glenn Chappell and Ian Chai
FIGlet Copyright 1996, 1997, 1998, 1999, 2000, 2001 John Cowan
FIGlet Copyright 2002 Christiaan Keet
FIGlet Copyright 2011, 2012 Claudio Matsuoka
Portions written by Paul Burton and Christiaan Keet
Internet: <[email protected]>
FIGlet, along with the various FIGlet fonts and documentation, is
copyrighted under the provisions of the New BSD License (3-clause)
(as listed in the file "LICENSE" which is included in this package)
****************************************************************************/
#define DATE "31 May 2012"
#define VERSION "2.2.5"
#define VERSION_INT 20205
/* FIGlet (Frank, Ian & Glenn's Letters) */
/* by Glenn Chappell */
/* Apr 1991 */
/* Automatic file addition by Ian Chai May 1991 */
/* Punctuation and numbers addition by Ian Chai Jan 1993 */
/* Full ASCII by Glenn Chappell Feb 1993 */
/* Line-breaking, general rewrite by Glenn Chappell Mar 1993 */
/* Hard blanks by Glenn Chappell Apr 1993 */
/* Release 2.0 5 Aug 1993 */
/* Right-to-left printing, extended char set by Glenn Chappell Dec 1993 */
/* Control files by Glenn Chappell Feb 1994 */
/* Release 2.1 12 Aug 1994 */
/* Release 2.1.1 25 Aug 1994 */
/* Release 2.1.2 by Gilbert (Mad Programmer) Healton: Add -A command line
option. Sept 8, 1996 */
/* Release 2.2 by John Cowan: multibyte inputs, compressed fonts,
mapping tables, kerning/smushing options. */
/* Release 2.2.1 by Christiaan Keet: minor updates including readmes
FAQs and comments. 13 July 2002. The new official FIGlet website is
http://www.figlet.org/ */
/* Release 2.2.2 by Christiaan Keet: License changed from "Artistic License"
to "Academic Free License" as agreed by FIGlet authors. 05 July 2005 */
/* Release 2.2.3 by Claudio Matsuoka, 12 Jan 2011: BSD license, fixes */
/* Release 2.2.4 by Claudio Matsuoka, 26 Jan 2011: tlf2 font support */
/* Release 2.2.5 by Claudio Matsuoka, 31 May 2012: flc licensing, minor fixes */
/*---------------------------------------------------------------------------
DEFAULTFONTDIR and DEFAULTFONTFILE should be defined in the Makefile.
DEFAULTFONTDIR is the full path name of the directory in which FIGlet
will search first for fonts (the ".flf" files).
DEFAULTFONTFILE is the filename of the font to be used if no other
is specified (standard.flf is recommended, but any other can be
used). This file should reside in the directory specified by
DEFAULTFONTDIR.
---------------------------------------------------------------------------*/
#ifndef DEFAULTFONTDIR
#define DEFAULTFONTDIR "fonts"
#endif
#ifndef DEFAULTFONTFILE
#define DEFAULTFONTFILE "standard.flf"
#endif
#include <stdio.h>
#ifdef __STDC__
#include <stdlib.h>
#endif
#include <string.h>
#include <ctype.h>
#include <sys/stat.h>
#include <fcntl.h> /* Needed for get_columns */
#ifdef unix
#include <unistd.h>
#include <sys/ioctl.h> /* Needed for get_columns */
#endif
#ifdef TLF_FONTS
#include <wchar.h>
#include <wctype.h>
#include "utf8.h"
#endif
#include "zipio.h" /* Package for reading compressed files */
#define MYSTRLEN(x) ((int)strlen(x)) /* Eliminate ANSI problem */
#define DIRSEP '/'
#define DIRSEP2 '\\'
/* Leave alone for Unix and MS-DOS/Windows!
Note: '/' also used in filename in get_columns(). */
#define FONTFILESUFFIX ".flf"
#define FONTFILEMAGICNUMBER "flf2"
#define FSUFFIXLEN MYSTRLEN(FONTFILESUFFIX)
#define CONTROLFILESUFFIX ".flc"
#define CONTROLFILEMAGICNUMBER "flc2" /* no longer used in 2.2 */
#define CSUFFIXLEN MYSTRLEN(CONTROLFILESUFFIX)
#define DEFAULTCOLUMNS 80
#define MAXLEN 255 /* Maximum character width */
/* Add support for Sam Hocevar's TOIlet fonts */
#ifdef TLF_FONTS
#define TOILETFILESUFFIX ".tlf"
#define TOILETFILEMAGICNUMBER "tlf2"
#define TSUFFIXLEN MYSTRLEN(TOILETFILESUFFIX)
int toiletfont; /* true if font is a TOIlet TLF font */
#endif
#ifdef DEBUG
#define debugprint(...) fprintf (stderr, __VA_ARGS__)
#else
#define debugprint(...)
#endif
/****************************************************************************
Globals dealing with chars that are read
****************************************************************************/
typedef long inchr; /* "char" read from stdin */
inchr *inchrline; /* Alloc'd inchr inchrline[inchrlinelenlimit+1]; */
/* Note: not null-terminated. */
int inchrlinelen,inchrlinelenlimit;
inchr deutsch[7] = {196, 214, 220, 228, 246, 252, 223};
/* Latin-1 codes for German letters, respectively:
LATIN CAPITAL LETTER A WITH DIAERESIS = A-umlaut
LATIN CAPITAL LETTER O WITH DIAERESIS = O-umlaut
LATIN CAPITAL LETTER U WITH DIAERESIS = U-umlaut
LATIN SMALL LETTER A WITH DIAERESIS = a-umlaut
LATIN SMALL LETTER O WITH DIAERESIS = o-umlaut
LATIN SMALL LETTER U WITH DIAERESIS = u-umlaut
LATIN SMALL LETTER SHARP S = ess-zed
*/
int hzmode; /* true if reading double-bytes in HZ mode */
int gndbl[4]; /* gndbl[n] is true if Gn is double-byte */
inchr gn[4]; /* Gn character sets: ASCII, Latin-1, none, none */
int gl; /* 0-3 specifies left-half Gn character set */
int gr; /* 0-3 specifies right-half Gn character set */
int Myargc; /* to avoid passing around argc and argv */
char **Myargv;
/****************************************************************************
Globals dealing with chars that are written
****************************************************************************/
#ifdef TLF_FONTS
typedef wchar_t outchr; /* "char" written to stdout */
#define STRLEN(x) wcslen(x)
#define STRCPY(x,y) wcscpy((x),(y))
#define STRCAT(x,y) wcscat((x),(y))
#define ISSPACE(x) iswspace(x)
#else
typedef char outchr; /* "char" written to stdout */
#define STRLEN(x) MYSTRLEN(x)
#define STRCPY(x,y) strcpy((x),(y))
#define STRCAT(x,y) strcat((x),(y))
#define ISSPACE(x) isspace(x)
#endif
typedef struct fc {
inchr ord;
outchr **thechar; /* Alloc'd char thechar[charheight][]; */
struct fc *next;
} fcharnode;
fcharnode *fcharlist;
outchr **currchar;
int currcharwidth;
int previouscharwidth;
outchr **outputline; /* Alloc'd char outputline[charheight][outlinelenlimit+1]; */
int outlinelen;
/****************************************************************************
Globals dealing with command file storage
****************************************************************************/
typedef struct cfn {
char *thename;
struct cfn *next;
} cfnamenode;
cfnamenode *cfilelist,**cfilelistend;
typedef struct cm {
int thecommand;
inchr rangelo;
inchr rangehi;
inchr offset;
struct cm *next;
} comnode;
comnode *commandlist,**commandlistend;
/****************************************************************************
Globals affected by command line options
****************************************************************************/
int deutschflag,justification,paragraphflag,right2left,multibyte;
int cmdinput;
#define SM_SMUSH 128
#define SM_KERN 64
#define SM_EQUAL 1
#define SM_LOWLINE 2
#define SM_HIERARCHY 4
#define SM_PAIR 8
#define SM_BIGX 16
#define SM_HARDBLANK 32
int smushmode;
#define SMO_NO 0 /* no command-line smushmode */
#define SMO_YES 1 /* use command-line smushmode, ignore font smushmode */
#define SMO_FORCE 2 /* logically OR command-line and font smushmodes */
int smushoverride;
int outputwidth;
int outlinelenlimit;
char *fontdirname,*fontname;
/****************************************************************************
Globals read from font file
****************************************************************************/
char hardblank;
int charheight;
/****************************************************************************
Name of program, used in error messages
****************************************************************************/
char *myname;
#ifdef TIOCGWINSZ
/****************************************************************************
get_columns
Determines the number of columns of /dev/tty. Returns the number of
columns, or -1 if error. May return 0 if columns unknown.
Requires include files <fcntl.h> and <sys/ioctl.h>.
by Glenn Chappell & Ian Chai 14 Apr 1993
****************************************************************************/
int get_columns()
{
struct winsize ws;
int fd,result;
if ((fd = open("/dev/tty",O_WRONLY))<0) return -1;
result = ioctl(fd,TIOCGWINSZ,&ws);
close(fd);
return result?-1:ws.ws_col;
}
#endif /* ifdef TIOCGWINSZ */
/****************************************************************************
myalloc
Calls malloc. If malloc returns error, prints error message and
quits.
****************************************************************************/
#ifdef __STDC__
char *myalloc(size_t size)
#else
char *myalloc(size)
int size;
#endif
{
char *ptr;
int i;
#ifndef __STDC__
extern void *malloc();
#endif
if ((ptr = (char*)malloc(size))==NULL) {
fprintf(stderr,"%s: Out of memory\n",myname);
exit(1);
}
else {
debugprint("* allocated %d bytes: %s\n",size,ptr);
for(i=0;i<size;i++){
ptr[i]=0;
}
return ptr;
}
}
/****************************************************************************
hasdirsep
Returns true if s1 contains a DIRSEP or DIRSEP2 character.
****************************************************************************/
int hasdirsep(s1)
char *s1;
{
if (strchr(s1, DIRSEP)) return 1;
else if (strchr(s1, DIRSEP2)) return 1;
else return 0;
}
/****************************************************************************
suffixcmp
Returns true if s2 is a suffix of s1; uses case-blind comparison.
****************************************************************************/
int suffixcmp(s1, s2)
char *s1;
char *s2;
{
int len1, len2;
len1 = MYSTRLEN(s1);
len2 = MYSTRLEN(s2);
if (len2 > len1) return 0;
s1 += len1 - len2;
while (*s1) {
if (tolower(*s1) != tolower(*s2)) return 0;
s1++;
s2++;
}
return 1;
}
/****************************************************************************
skiptoeol
Skips to the end of a line, given a stream. Handles \r, \n, or \r\n.
****************************************************************************/
void skiptoeol(fp)
ZFILE *fp;
{
int dummy;
while (dummy=Zgetc(fp),dummy!=EOF) {
if (dummy == '\n') return;
if (dummy == '\r') {
dummy = Zgetc(fp);
if (dummy != EOF && dummy != '\n') Zungetc(dummy,fp);
return;
}
}
}
/****************************************************************************
myfgets
Local version of fgets. Handles \r, \n, and \r\n terminators.
****************************************************************************/
char *myfgets(line,maxlen,fp)
char *line;
int maxlen;
ZFILE *fp;
{
int c = 0;
char *p;
p = line;
while((c=Zgetc(fp))!=EOF&&maxlen) {
*p++ = c;
maxlen--;
if (c=='\n') break;
if (c=='\r') {
c = Zgetc(fp);
if (c != EOF && c != '\n') Zungetc(c,fp);
*(p-1) = '\n';
break;
}
}
*p = 0;
return (c==EOF) ? NULL : line;
}
/****************************************************************************
usageerr
Prints "Usage: ...." line to the given stream.
****************************************************************************/
void printusage(out)
FILE *out;
{
fprintf(out,
"Usage: %s [ -cklnoprstvxDELNRSWX ] [ -d fontdirectory ]\n",
myname);
fprintf(out,
" [ -f fontfile ] [ -m smushmode ] [ -w outputwidth ]\n");
fprintf(out,
" [ -C controlfile ] [ -I infocode ] [ message ]\n");
}
/****************************************************************************
printinfo
Prints version and copyright message, or utility information.
****************************************************************************/
void printinfo(infonum)
int infonum;
{
switch (infonum) {
case 0: /* Copyright message */
printf("FIGlet Copyright (C) 1991-2012 Glenn Chappell, Ian Chai, ");
printf("John Cowan,\nChristiaan Keet and Claudio Matsuoka\n");
printf("Internet: <[email protected]> ");
printf("Version: %s, date: %s\n\n",VERSION,DATE);
printf("FIGlet, along with the various FIGlet fonts");
printf(" and documentation, may be\n");
printf("freely copied and distributed.\n\n");
printf("If you use FIGlet, please send an");
printf(" e-mail message to <[email protected]>.\n\n");
printf("The latest version of FIGlet is available from the");
printf(" web site,\n\thttp://www.figlet.org/\n\n");
printusage(stdout);
break;
case 1: /* Version (integer) */
printf("%d\n",VERSION_INT);
break;
case 2: /* Font directory */
printf("%s\n",fontdirname);
break;
case 3: /* Font */
printf("%s\n",fontname);
break;
case 4: /* Outputwidth */
printf("%d\n",outputwidth);
break;
case 5: /* Font formats */
printf("%s", FONTFILEMAGICNUMBER);
#ifdef TLF_FONTS
printf(" %s", TOILETFILEMAGICNUMBER);
#endif
printf("\n");
}
}
/****************************************************************************
readmagic
Reads a four-character magic string from a stream.
****************************************************************************/
void readmagic(fp,magic)
ZFILE *fp;
char *magic;
{
int i;
for (i=0;i<4;i++) {
magic[i] = Zgetc(fp);
}
magic[4] = 0;
}
/****************************************************************************
skipws
Skips whitespace characters from a stream.
****************************************************************************/
void skipws(fp)
ZFILE *fp;
{
int c;
while (c=Zgetc(fp),isascii(c)&&isspace(c)) ;
Zungetc(c,fp);
}
/****************************************************************************
readnum
Reads a number from a stream. Accepts "0" prefix for octal and
"0x" or "0X" for hexadecimal. Ignores leading whitespace.
****************************************************************************/
void readnum(fp,nump)
ZFILE *fp;
inchr *nump;
{
int acc = 0;
char *p;
int c;
int base;
int sign = 1;
char digits[] = "0123456789ABCDEF";
skipws(fp);
c = Zgetc(fp);
if (c=='-') {
sign = -1;
}
else {
Zungetc(c,fp);
}
c = Zgetc(fp);
if (c=='0') {
c = Zgetc(fp);
if (c=='x'||c=='X') {
base = 16;
}
else {
base = 8;
Zungetc(c,fp);
}
}
else {
base = 10;
Zungetc(c,fp);
}
while((c=Zgetc(fp))!=EOF) {
c=toupper(c);
p=strchr(digits,c);
if (!p) {
Zungetc(c,fp);
*nump = acc * sign;
return;
}
acc = acc*base+(p-digits);
}
*nump = acc * sign;
}
/****************************************************************************
readTchar
Reads a control file "T" command character specification.
Character is a single byte, an escape sequence, or
an escaped numeric.
****************************************************************************/
inchr readTchar(fp)
ZFILE *fp;
{
inchr thechar;
char next;
thechar=Zgetc(fp);
if (thechar=='\n' || thechar=='\r') { /* Handle badly-formatted file */
Zungetc(thechar,fp);
return '\0';
}
if (thechar!='\\') return thechar;
next=Zgetc(fp);
switch(next) {
case 'a':
return 7;
case 'b':
return 8;
case 'e':
return 27;
case 'f':
return 12;
case 'n':
return 10;
case 'r':
return 13;
case 't':
return 9;
case 'v':
return 11;
default:
if (next=='-' || next=='x' || (next>='0' && next<='9')) {
Zungetc(next,fp);
readnum(fp,&thechar);
return thechar;
}
return next;
}
}
/****************************************************************************
charsetname
Get a Tchar representing a charset name, or 0 if none available.
Called in getcharset().
****************************************************************************/
inchr charsetname(fp)
ZFILE *fp;
{
inchr result;
result = readTchar(fp);
if (result == '\n' || result == '\r') {
result = 0;
Zungetc(result,fp);
}
return result;
}
/****************************************************************************
charset
Processes "g[0123]" character set specifier
Called in readcontrol().
****************************************************************************/
void charset(n, controlfile)
int n;
ZFILE *controlfile;
{
int ch;
skipws(controlfile);
if (Zgetc(controlfile) != '9') {
skiptoeol(controlfile);
return;
}
ch = Zgetc(controlfile);
if (ch == '6') {
gn[n] = 65536L * charsetname(controlfile) + 0x80;
gndbl[n] = 0;
skiptoeol(controlfile);
return;
}
if (ch != '4') {
skiptoeol(controlfile);
return;
}
ch = Zgetc(controlfile);
if (ch == 'x') {
if (Zgetc(controlfile) != '9') {
skiptoeol(controlfile);
return;
}
if (Zgetc(controlfile) != '4') {
skiptoeol(controlfile);
return;
}
skipws(controlfile);
gn[n] = 65536L * charsetname(controlfile);
gndbl[n] = 1;
skiptoeol(controlfile);
return;
}
Zungetc(ch, controlfile);
skipws(controlfile);
gn[n] = 65536L * charsetname(controlfile);
gndbl[n] = 0;
return;
}
/****************************************************************************
FIGopen
Given a FIGlet font or control file name and suffix, return the file
or NULL if not found
****************************************************************************/
ZFILE *FIGopen(name,suffix)
char *name;
char *suffix;
{
char *fontpath;
ZFILE *fontfile;
struct stat st;
int namelen;
namelen = MYSTRLEN(fontdirname);
fontpath = (char*)alloca(sizeof(char)*
(namelen+MYSTRLEN(name)+MYSTRLEN(suffix)+2));
fontfile = NULL;
if (!hasdirsep(name)) { /* not a full path name */
strcpy(fontpath,fontdirname);
fontpath[namelen] = DIRSEP;
fontpath[namelen+1] = '\0';
strcat(fontpath,name);
strcat(fontpath,suffix);
if(stat(fontpath,&st)==0) goto ok;
}
/* just append suffix */
strcpy(fontpath,name);
strcat(fontpath,suffix);
if(stat(fontpath,&st)==0) goto ok;
return NULL;
ok:
fontfile = Zopen(fontpath,"rb");
return fontfile;
}
/****************************************************************************
readcontrol
Allocates memory and reads in the given control file.
Called in readcontrolfiles().
****************************************************************************/
void readcontrol(controlname)
char *controlname;
{
inchr firstch,lastch;
char dashcheck;
inchr offset;
int command;
ZFILE *controlfile;
controlfile = FIGopen(controlname,CONTROLFILESUFFIX);
if (controlfile==NULL) {
fprintf(stderr,"%s: %s: Unable to open control file\n",myname,
controlname);
exit(1);
}
(*commandlistend) = (comnode*)myalloc(sizeof(comnode));
(*commandlistend)->thecommand = 0; /* Begin with a freeze command */
commandlistend = &(*commandlistend)->next;
(*commandlistend) = NULL;
while(command=Zgetc(controlfile),command!=EOF) {
switch (command) {
case 't': /* Translate */
skipws(controlfile);
firstch=readTchar(controlfile);
if ((dashcheck=Zgetc(controlfile))=='-') {
lastch=readTchar(controlfile);
}
else {
Zungetc(dashcheck,controlfile);
lastch=firstch;
}
skipws(controlfile);
offset=readTchar(controlfile)-firstch;
skiptoeol(controlfile);
(*commandlistend) = (comnode*)myalloc(sizeof(comnode));
(*commandlistend)->thecommand = 1;
(*commandlistend)->rangelo = firstch;
(*commandlistend)->rangehi = lastch;
(*commandlistend)->offset = offset;
commandlistend = &(*commandlistend)->next;
(*commandlistend) = NULL;
break;
case '0': case '1': case '2': case '3': case '4':
case '5': case '6': case '7': case '8': case '9':
case '-':
/* Mapping table entry */
Zungetc(command,controlfile);
readnum(controlfile,&firstch);
skipws(controlfile);
readnum(controlfile,&lastch);
offset=lastch-firstch;
lastch=firstch;
skiptoeol(controlfile);
(*commandlistend) = (comnode*)myalloc(sizeof(comnode));
(*commandlistend)->thecommand = 1;
(*commandlistend)->rangelo = firstch;
(*commandlistend)->rangehi = lastch;
(*commandlistend)->offset = offset;
commandlistend = &(*commandlistend)->next;
(*commandlistend) = NULL;
break;
case 'f': /* freeze */
skiptoeol(controlfile);
(*commandlistend) = (comnode*)myalloc(sizeof(comnode));
(*commandlistend)->thecommand = 0;
commandlistend = &(*commandlistend)->next;
(*commandlistend) = NULL;
break;
case 'b': /* DBCS input mode */
multibyte = 1;
break;
case 'u': /* UTF-8 input mode */
multibyte = 2;
break;
case 'h': /* HZ input mode */
multibyte = 3;
break;
case 'j': /* Shift-JIS input mode */
multibyte = 4;
break;
case 'g': /* ISO 2022 character set choices */
multibyte = 0;
skipws(controlfile);
command=Zgetc(controlfile);
switch (command) {
case '0': /* define G0 charset */
charset(0, controlfile);
break;
case '1': /* set G1 charset */
charset(1, controlfile);
break;
case '2': /* set G2 charset */
charset(2, controlfile);
break;
case '3': /* set G3 charset */
charset(3, controlfile);
break;
case 'l': case 'L': /* define left half */
skipws(controlfile);
gl = Zgetc(controlfile) - '0';
skiptoeol(controlfile);
break;
case 'r': case 'R': /* define right half */
skipws(controlfile);
gr = Zgetc(controlfile) - '0';
skiptoeol(controlfile);
break;
default: /* meaningless "g" command */
skiptoeol(controlfile);
}
case '\r': case '\n': /* blank line */
break;
default: /* Includes '#' */
skiptoeol(controlfile);
}
}
Zclose(controlfile);
}
/****************************************************************************
readcontrolfiles
Reads in the controlfiles names in cfilelist. Uses readcontrol.
Called in main().
****************************************************************************/
void readcontrolfiles()
{
cfnamenode *cfnptr;
for (cfnptr=cfilelist;cfnptr!=NULL;cfnptr=cfnptr->next) {
readcontrol(cfnptr->thename);
}
}
/****************************************************************************
clearcfilelist
Clears the control file list. Assumes thename does not need freeing.
****************************************************************************/
void clearcfilelist()
{
cfnamenode *cfnptr1,*cfnptr2;
cfnptr1 = cfilelist;
while (cfnptr1 != NULL) {
cfnptr2 = cfnptr1->next;
free(cfnptr1);
cfnptr1 = cfnptr2;
}
cfilelist = NULL;
cfilelistend = &cfilelist;
}
/****************************************************************************
getparams
Handles all command-line parameters. Puts all parameters within
bounds.
****************************************************************************/
void getparams()
{
extern char *optarg;
extern int optind;
int c; /* "Should" be a char -- need int for "!= -1" test*/
int columns,infoprint;
char *controlname,*env;
if ((myname = strrchr(Myargv[0],DIRSEP))!=NULL) {
myname++;
}
else {
myname = Myargv[0];
}
fontdirname = DEFAULTFONTDIR;
env = getenv("FIGLET_FONTDIR");
if (env!=NULL) {
fontdirname = env;
}
fontname = DEFAULTFONTFILE;
cfilelist = NULL;
cfilelistend = &cfilelist;
commandlist = NULL;
commandlistend = &commandlist;
smushoverride = SMO_NO;
deutschflag = 0;
justification = -1;
right2left = -1;
paragraphflag = 0;
infoprint = -1;
cmdinput = 0;
outputwidth = DEFAULTCOLUMNS;
gn[1] = 0x80;
gr = 1;
while ((c = getopt(Myargc,Myargv,"ADEXLRI:xlcrpntvm:w:d:f:C:NFskSWo"))!= -1) {
/* Note: -F is not a legal option -- prints a special err message. */
switch (c) {
case 'A':
cmdinput = 1;
break;
case 'D':
deutschflag = 1;
break;
case 'E':
deutschflag = 0;
break;
case 'X':
right2left = -1;
break;
case 'L':
right2left = 0;
break;
case 'R':
right2left = 1;
break;
case 'x':
justification = -1;
break;
case 'l':
justification = 0;
break;
case 'c':
justification = 1;
break;
case 'r':
justification = 2;
break;
case 'p':
paragraphflag = 1;
break;
case 'n':
paragraphflag = 0;
break;
case 's':
smushoverride = SMO_NO;
break;
case 'k':
smushmode = SM_KERN;
smushoverride = SMO_YES;