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Diffstat (limited to 'contrib/groff/grn/main.cc')
| -rw-r--r-- | contrib/groff/grn/main.cc | 901 |
1 files changed, 901 insertions, 0 deletions
diff --git a/contrib/groff/grn/main.cc b/contrib/groff/grn/main.cc new file mode 100644 index 000000000000..bcbb2df85e56 --- /dev/null +++ b/contrib/groff/grn/main.cc @@ -0,0 +1,901 @@ +/* Last non-groff version: main.cc 1.23 (Berkeley) 85/08/05 + * + * Adapted to GNU troff by Daniel Senderowicz 99/12/29. + * + * Further refinements by Werner Lemberg 00/02/20. + * + * + * This file contains the main and file system dependent routines for + * processing gremlin files into troff input. The program watches input go + * by to standard output, only interpreting things between .GS and .GE + * lines. Default values (font, size, scale, thickness) may be overridden + * with a `default' command and are further overridden by commands in the + * input. + * + * Inside the GS and GE, commands are accepted to reconfigure the picture. + * At most one command may reside on each line, and each command is followed + * by a parameter separated by white space. The commands are as follows, + * and may be abbreviated down to one character (with exception of `scale' + * and `stipple' down to "sc" and "st") and may be upper or lower case. + * + * default - Make all settings in the current + * .GS/.GE the global defaults. Height, + * width and file are NOT saved. + * 1, 2, 3, 4 - Set size 1, 2, 3, or 4 (followed by an + * integer point size). + * roman, italics, bold, special - Set gremlin's fonts to any other troff + * font (one or two characters). + * stipple, l - Use a stipple font for polygons. Arg + * is troff font name. No Default. Can + * use only one stipple font per picture. + * (See below for stipple font index.) + * scale, x - Scale is IN ADDITION to the global + * scale factor from the default. + * pointscale - Turn on scaling point sizes to match + * `scale' commands. (Optional operand + * `off' to turn it off.) + * narrow, medium, thick - Set widths of lines. + * file - Set the file name to read the gremlin + * picture from. If the file isn't in + * the current directory, the gremlin + * library is tried. + * width, height - These two commands override any + * scaling factor that is in effect, and + * forces the picture to fit into either + * the height or width specified, + * whichever makes the picture smaller. + * The operand for these two commands is + * a floating-point number in units of + * inches. + * l<nn> (integer <nn>) - Set association between stipple <nn> + * and a stipple `character'. <nn> must + * be in the range 0 to NSTIPPLES (16) + * inclusive. The integer operand is an + * index in the stipple font selected. + * Valid cf (cifplot) indices are 1-32 + * (although 24 is not defined), valid ug + * (unigrafix) indices are 1-14, and + * valid gs (gray scale) indices are + * 0-16. Nonetheless, any number between + * 0 and 255 is accepted since new + * stipple fonts may be added. An + * integer operand is required. + * + * Troff number registers used: g1 through g9. g1 is the width of the + * picture, and g2 is the height. g3, and g4, save information, g8 and g9 + * are used for text processing and g5-g7 are reserved. + */ + + +#include <ctype.h> +#include <stdlib.h> +#include <string.h> +#include "gprint.h" + +#include "device.h" +#include "font.h" +#include "searchpath.h" +#include "macropath.h" + +#include "lib.h" +#include "errarg.h" +#include "error.h" +#include "defs.h" + +/* database imports */ + +extern void HGPrintElt(ELT *element, int baseline); +extern ELT *DBInit(void); +extern ELT *DBRead(register FILE *file); +extern POINT *PTInit(); +extern POINT *PTMakePoint(float x, float y, POINT **pplist); + + +#define SUN_SCALEFACTOR 0.70 + +/* #define DEFSTIPPLE "gs" */ +#define DEFSTIPPLE "cf" + +#define MAXINLINE 100 /* input line length */ + +#define SCREENtoINCH 0.02 /* scaling factor, screen to inches */ + +#define BIG 999999999999.0 /* unweildly large floating number */ + + +static char sccsid[] = "@(#) (Berkeley) 8/5/85, 12/28/99"; + +int res; /* the printer's resolution goes here */ + +int dotshifter; /* for the length of dotted curves */ + +double linethickness; /* brush styles */ +int linmod; +int lastx; /* point registers for printing elements */ +int lasty; +int lastyline; /* A line's vertical position is NOT the */ + /* same after that line is over, so for a */ + /* line of drawing commands, vertical */ + /* spacing is kept in lastyline */ + +/* These are the default fonts, sizes, line styles, */ +/* and thicknesses. They can be modified from a */ +/* `default' command and are reset each time the */ +/* start of a picture (.GS) is found. */ + +char *deffont[] = +{"R", "I", "B", "S"}; +int defsize[] = +{10, 16, 24, 36}; +/* #define BASE_THICKNESS 1.0 */ +#define BASE_THICKNESS 0.15 +double defthick[STYLES] = +{1 * BASE_THICKNESS, + 1 * BASE_THICKNESS, + 5 * BASE_THICKNESS, + 1 * BASE_THICKNESS, + 1 * BASE_THICKNESS, + 3 * BASE_THICKNESS}; + +/* int cf_stipple_index[NSTIPPLES + 1] = */ +/* {0, 1, 3, 12, 14, 16, 19, 21, 23}; */ +/* a logarithmic scale looks better than a linear one for the gray shades */ +/* */ +/* int other_stipple_index[NSTIPPLES + 1] = */ +/* {0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16}; */ + +int cf_stipple_index[NSTIPPLES + 1] = +{0, 18, 32, 56, 100, 178, 316, 562, 1000}; /* only 1-8 used */ +int other_stipple_index[NSTIPPLES + 1] = +{0, 62, 125, 187, 250, 312, 375, 437, 500, + 562, 625, 687, 750, 812, 875, 937, 1000}; + +/* int *defstipple_index = other_stipple_index; */ +int *defstipple_index = cf_stipple_index; + +int style[STYLES] = +{DOTTED, DOTDASHED, SOLID, DASHED, SOLID, SOLID}; +double scale = 1.0; /* no scaling, default */ +int defpoint = 0; /* flag for pointsize scaling */ +char *defstipple = (char *) 0; +enum { + OUTLINE, FILL, BOTH +} polyfill; + +/* flag to controll filling of polygons */ + +double adj1 = 0.0; +double adj2 = 0.0; +double adj3 = 0.0; +double adj4 = 0.0; + +double thick[STYLES]; /* thicknesses set by defaults, then by */ + /* commands */ +char *tfont[FONTS]; /* fonts originally set to deffont values, */ + /* then */ +int tsize[SIZES]; /* optionally changed by commands inside */ + /* grn */ +int stipple_index[NSTIPPLES + 1]; /* stipple font file indices */ +char *stipple; + +double xscale; /* scaling factor from individual pictures */ +double troffscale; /* scaling factor at output time */ + +double width; /* user-request maximum width for picture */ + /* (in inches) */ +double height; /* user-request height */ +int pointscale; /* flag for pointsize scaling */ +int setdefault; /* flag for a .GS/.GE to remember all */ + /* settings */ +int sflag; /* -s flag: sort order (do polyfill first) */ + +double toppoint; /* remember the picture */ +double bottompoint; /* bounds in these variables */ +double leftpoint; +double rightpoint; + +int ytop; /* these are integer versions of the above */ +int ybottom; /* so not to convert each time they're used */ +int xleft; +int xright; + +int linenum = 0; /* line number of input file */ +char inputline[MAXINLINE]; /* spot to filter through the file */ +char *c1 = inputline; /* c1, c2, and c3 will be used to */ +char *c2 = inputline + 1; /* hunt for lines that begin with */ +char *c3 = inputline + 2; /* ".GS" by looking individually */ +char *c4 = inputline + 3; /* needed for compatibility mode */ +char GScommand[MAXINLINE]; /* put user's ".GS" command line here */ +char gremlinfile[MAXINLINE]; /* filename to use for a picture */ +int SUNFILE = FALSE; /* TRUE if SUN gremlin file */ +int compatibility_flag = FALSE; /* TRUE if in compatibility mode */ + + +void getres(void); +char *doinput(FILE *fp); +void conv(register FILE *fp, int baseline); +void savestate(void); +int has_polygon(register ELT *elist); +void interpret(char *line); + + +void +usage() +{ + fprintf(stderr, + "usage: %s [ -vCs ] [ -M dir ] [ -F dir ] [ -T dev ] [ file ]\n", + program_name); + exit(1); +} + + +/*----------------------------------------------------------------------------* + | Routine: main (argument_count, argument_pointer) + | + | Results: Parses the command line, accumulating input file names, then + | reads the inputs, passing it directly to output until a `.GS' + | line is read. Main then passes control to `conv' to do the + | gremlin file conversions. + *----------------------------------------------------------------------------*/ + +int +main(int argc, + char **argv) +{ + program_name = argv[0]; + register FILE *fp; + register int k; + register char c; + register int gfil = 0; + char *file[50]; + char *operand(int *argcp, char ***argvp); + + while (--argc) { + if (**++argv != '-') + file[gfil++] = *argv; + else + switch (c = (*argv)[1]) { + + case 0: + file[gfil++] = NULL; + break; + + case 'v': + { + extern const char *Version_string; + fprintf(stderr, "GNU grn version %s\n", Version_string); + fflush(stderr); + break; + } + case 'C': /* compatibility mode */ + compatibility_flag = TRUE; + break; + + case 'F': /* font path to find DESC */ + font::command_line_font_dir(operand(&argc, &argv)); + break; + + case 'T': /* final output typesetter name */ + device = operand(&argc, &argv); + break; + + case 'M': /* set library directory */ + macro_path.command_line_dir(operand(&argc, &argv)); + break; + + case 's': /* preserve order of elements */ + sflag = 1; + break; + + case '?': + usage(); + break; + + default: + error("unknown switch: %1", c); + usage(); + } + } + + getres(); /* set the resolution for an output device */ + + if (gfil == 0) { /* no filename, use standard input */ + file[0] = NULL; + gfil++; + } + + for (k = 0; k < gfil; k++) { + if (file[k] != NULL) { + if ((fp = fopen(file[k], "r")) == NULL) + fatal("can't open %1", file[k]); + } else + fp = stdin; + + while (doinput(fp) != NULL) { + if (*c1 == '.' && *c2 == 'G' && *c3 == 'S') { + if (compatibility_flag || + *c4 == '\n' || *c4 == ' ' || *c4 == '\0') + conv(fp, linenum); + else + fputs(inputline, stdout); + } else + fputs(inputline, stdout); + } + } +} + + +/*----------------------------------------------------------------------------* + | Routine: char * operand (& argc, & argv) + | + | Results: Returns address of the operand given with a command-line + | option. It uses either `-Xoperand' or `-X operand', whichever + | is present. The program is terminated if no option is + | present. + | + | Side Efct: argc and argv are updated as necessary. + *----------------------------------------------------------------------------*/ + +char * +operand(int *argcp, + char ***argvp) +{ + if ((**argvp)[2]) + return (**argvp + 2); /* operand immediately follows */ + if ((--*argcp) <= 0) { /* no operand */ + error("command-line option operand missing."); + exit(8); + } + return (*(++(*argvp))); /* operand is next word */ +} + + +/*----------------------------------------------------------------------------* + | Routine: getres () + | + | Results: Sets `res' to the resolution of the output device. + *----------------------------------------------------------------------------*/ + +void +getres(void) +{ + int linepiece; + + if (!font::load_desc()) + fatal("sorry, I can't continue"); + + res = font::res; + + /* Correct the brush thicknesses based on res */ + /* if (res >= 256) { + defthick[0] = res >> 8; + defthick[1] = res >> 8; + defthick[2] = res >> 4; + defthick[3] = res >> 8; + defthick[4] = res >> 8; + defthick[5] = res >> 6; + } */ + + linepiece = res >> 9; + for (dotshifter = 0; linepiece; dotshifter++) + linepiece = linepiece >> 1; +} + + +/*----------------------------------------------------------------------------* + | Routine: char * doinput (file_pointer) + | + | Results: A line of input is read into `inputline'. + | + | Side Efct: "linenum" is incremented. + | + | Bugs: Lines longer than MAXINLINE are NOT checked, except for + | updating `linenum'. + *----------------------------------------------------------------------------*/ + +char * +doinput(FILE *fp) +{ + char *k; + + if ((k = fgets(inputline, MAXINLINE, fp)) == NULL) + return k; + if (strchr(inputline, '\n')) /* ++ only if it's a complete line */ + linenum++; + return (char *) !NULL; +} + + +/*----------------------------------------------------------------------------* + | Routine: initpic ( ) + | + | Results: Sets all parameters to the normal defaults, possibly + | overridden by a setdefault command. Initialize the picture + | variables, and output the startup commands to troff to begin + | the picture. + *----------------------------------------------------------------------------*/ + +void +initpic(void) +{ + register int i; + + for (i = 0; i < STYLES; i++) { /* line thickness defaults */ + thick[i] = defthick[i]; + } + for (i = 0; i < FONTS; i++) { /* font name defaults */ + tfont[i] = deffont[i]; + } + for (i = 0; i < SIZES; i++) { /* font size defaults */ + tsize[i] = defsize[i]; + } + for (i = 0; i <= NSTIPPLES; i++) { /* stipple font file default indices */ + stipple_index[i] = defstipple_index[i]; + } + stipple = defstipple; + + gremlinfile[0] = 0; /* filename is `null' */ + setdefault = 0; /* this is not the default settings (yet) */ + + toppoint = BIG; /* set the picture bounds out */ + bottompoint = -BIG; /* of range so they'll be set */ + leftpoint = BIG; /* by `savebounds' on input */ + rightpoint = -BIG; + + pointscale = defpoint; /* flag for scaling point sizes default */ + xscale = scale; /* default scale of individual pictures */ + width = 0.0; /* size specifications input by user */ + height = 0.0; + + linethickness = DEFTHICK; /* brush styles */ + linmod = DEFSTYLE; +} + + +/*----------------------------------------------------------------------------* + | Routine: conv (file_pointer, starting_line) + | + | Results: At this point, we just passed a `.GS' line in the input + | file. conv reads the input and calls `interpret' to process + | commands, gathering up information until a `.GE' line is + | found. It then calls `HGPrint' to do the translation of the + | gremlin file to troff commands. + *----------------------------------------------------------------------------*/ + +void +conv(register FILE *fp, + int baseline) +{ + register FILE *gfp = NULL; /* input file pointer */ + register int done = 0; /* flag to remember if finished */ + register ELT *e; /* current element pointer */ + ELT *PICTURE; /* whole picture data base pointer */ + double temp; /* temporary calculating area */ + /* POINT ptr; */ /* coordinates of a point to pass to `mov' */ + /* routine */ + int flyback; /* flag `want to end up at the top of the */ + /* picture?' */ + int compat; /* test character after .GE or .GF */ + + + initpic(); /* set defaults, ranges, etc. */ + strcpy(GScommand, inputline); /* save `.GS' line for later */ + + do { + done = (doinput(fp) == NULL); /* test for EOF */ + flyback = (*c3 == 'F'); /* and .GE or .GF */ + compat = (compatibility_flag || + *c4 == '\n' || *c4 == ' ' || *c4 == '\0'); + done |= (*c1 == '.' && *c2 == 'G' && (*c3 == 'E' || flyback) && + compat); + + if (done) { + if (setdefault) + savestate(); + + if (!gremlinfile[0]) { + if (!setdefault) + error("at line %1: no picture filename.\n", baseline); + return; + } + char *path; + gfp = macro_path.open_file(gremlinfile, &path); + if (!gfp) + return; + PICTURE = DBRead(gfp); /* read picture file */ + fclose(gfp); + a_delete path; + if (DBNullelt(PICTURE)) + return; /* If a request is made to make the */ + /* picture fit into a specific area, */ + /* set the scale to do that. */ + + if (stipple == (char *) NULL) /* if user forgot stipple */ + if (has_polygon(PICTURE)) /* and picture has a polygon */ + stipple = DEFSTIPPLE; /* then set the default */ + + if ((temp = bottompoint - toppoint) < 0.1) + temp = 0.1; + temp = (height != 0.0) ? height / (temp * SCREENtoINCH) : BIG; + if ((troffscale = rightpoint - leftpoint) < 0.1) + troffscale = 0.1; + troffscale = (width != 0.0) ? + width / (troffscale * SCREENtoINCH) : BIG; + if (temp == BIG && troffscale == BIG) + troffscale = xscale; + else { + if (temp < troffscale) + troffscale = temp; + } /* here, troffscale is the */ + /* picture's scaling factor */ + if (pointscale) { + register int i; /* do pointscaling here, when */ + /* scale is known, before output */ + for (i = 0; i < SIZES; i++) + tsize[i] = (int) (troffscale * (double) tsize[i] + 0.5); + } + + /* change to device units */ + troffscale *= SCREENtoINCH * res; /* from screen units */ + + ytop = (int) (toppoint * troffscale); /* calculate integer */ + ybottom = (int) (bottompoint * troffscale); /* versions of the */ + xleft = (int) (leftpoint * troffscale); /* picture limits */ + xright = (int) (rightpoint * troffscale); + + /* save stuff in number registers, */ + /* register g1 = picture width and */ + /* register g2 = picture height, */ + /* set vertical spacing, no fill, */ + /* and break (to make sure picture */ + /* starts on left), and put out the */ + /* user's `.GS' line. */ + printf(".br\n" + ".nr g1 %du\n" + ".nr g2 %du\n" + "%s" + ".nr g3 \\n(.f\n" + ".nr g4 \\n(.s\n" + "\\0\n" + ".sp -1\n", + xright - xleft, ybottom - ytop, GScommand); + + if (stipple) /* stipple requested for this picture */ + printf(".st %s\n", stipple); + lastx = xleft; /* note where we are (upper left */ + lastyline = lasty = ytop; /* corner of the picture) */ + + /* Just dump everything in the order it appears. + * + * If -s command-line option, traverse picture twice: First time, + * print only the interiors of filled polygons (as borderless + * polygons). Second time, print the outline as series of line + * segments. This way, postprocessors that overwrite rather than + * merge picture elements (such as Postscript) can still have text and + * graphics on a shaded background. + */ + /* if (sflag) */ + if (!sflag) { /* changing the default for filled polygons */ + e = PICTURE; + polyfill = FILL; + while (!DBNullelt(e)) { + printf(".mk\n"); + if (e->type == POLYGON) + HGPrintElt(e, baseline); + printf(".rt\n"); + lastx = xleft; + lastyline = lasty = ytop; + e = DBNextElt(e); + } + } + e = PICTURE; + + /* polyfill = !sflag ? BOTH : OUTLINE; */ + polyfill = sflag ? BOTH : OUTLINE; /* changing the default */ + while (!DBNullelt(e)) { + printf(".mk\n"); + HGPrintElt(e, baseline); + printf(".rt\n"); + lastx = xleft; + lastyline = lasty = ytop; + e = DBNextElt(e); + } + + /* decide where to end picture */ + + /* I changed everything here. I always use the combination .mk and */ + /* .rt so once finished I just space down the heigth of the picture */ + /* that is \n(g2u */ + if (flyback) { /* end picture at upper left */ + /* ptr.x = leftpoint; + ptr.y = toppoint; */ + } else { /* end picture at lower left */ + /* ptr.x = leftpoint; + ptr.y = bottompoint; */ + printf(".sp \\n(g2u\n"); + } + + /* tmove(&ptr); */ /* restore default line parameters */ + + /* restore everything to the way it was before the .GS, then put */ + /* out the `.GE' line from user */ + + /* printf("\\D't %du'\\D's %du'\n", DEFTHICK, DEFSTYLE); */ + /* groff doesn't understand the \Ds command */ + + printf("\\D't %du'\n", DEFTHICK); + if (flyback) /* make sure we end up at top of */ + printf(".sp -1\n"); /* picture if `flying back' */ + if (stipple) /* restore stipple to previous */ + printf(".st\n"); + printf(".br\n" + ".ft \\n(g3\n" + ".ps \\n(g4\n" + "%s", inputline); + } else + interpret(inputline); /* take commands from the input file */ + } while (!done); +} + + +/*----------------------------------------------------------------------------* + | Routine: savestate ( ) + | + | Results: all the current scaling / font size / font name / thickness + | / pointscale settings are saved to be the defaults. Scaled + | point sizes are NOT saved. The scaling is done each time a + | new picture is started. + | + | Side Efct: scale, and def* are modified. + *----------------------------------------------------------------------------*/ + +void +savestate(void) +{ + register int i; + + for (i = 0; i < STYLES; i++) /* line thickness defaults */ + defthick[i] = thick[i]; + for (i = 0; i < FONTS; i++) /* font name defaults */ + deffont[i] = tfont[i]; + for (i = 0; i < SIZES; i++) /* font size defaults */ + defsize[i] = tsize[i]; + for (i = 0; i <= NSTIPPLES; i++) /* stipple font file default indices */ + defstipple_index[i] = stipple_index[i]; + + defstipple = stipple; /* if stipple has been set, it's remembered */ + scale *= xscale; /* default scale of individual pictures */ + defpoint = pointscale; /* flag for scaling pointsizes from x factors */ +} + + +/*----------------------------------------------------------------------------* + | Routine: savebounds (x_coordinate, y_coordinate) + | + | Results: Keeps track of the maximum and minimum extent of a picture + | in the global variables: left-, right-, top- and + | bottompoint. `savebounds' assumes that the points have been + | oriented to the correct direction. No scaling has taken + | place, though. + *----------------------------------------------------------------------------*/ + +void +savebounds(float x, + float y) +{ + if (x < leftpoint) + leftpoint = x; + if (x > rightpoint) + rightpoint = x; + if (y < toppoint) + toppoint = y; + if (y > bottompoint) + bottompoint = y; +} + + +/*----------------------------------------------------------------------------* + | Routine: interpret (character_string) + | + | Results: Commands are taken from the input string and performed. + | Commands are separated by the endofline, and are of the + | format: + | string1 string2 + | + | where string1 is the command and string2 is the argument. + | + | Side Efct: Font and size strings, plus the gremlin file name and the + | width and height variables are set by this routine. + *----------------------------------------------------------------------------*/ + +void +interpret(char *line) +{ + char str1[MAXINLINE]; + char str2[MAXINLINE]; + register char *chr; + register int i; + double par; + + str2[0] = '\0'; + sscanf(line, "%80s%80s", &str1[0], &str2[0]); + for (chr = &str1[0]; *chr; chr++) /* convert command to */ + if (isupper(*chr)) + *chr = tolower(*chr); /* lower case */ + + switch (str1[0]) { + + case '1': + case '2': /* font sizes */ + case '3': + case '4': + i = atoi(str2); + if (i > 0 && i < 1000) + tsize[str1[0] - '1'] = i; + else + error("bad font size value at line %1", linenum); + break; + + case 'r': /* roman */ + if (str2[0] < '0') + goto nofont; + tfont[0] = (char *) malloc(strlen(str2) + 1); + strcpy(tfont[0], str2); + break; + + case 'i': /* italics */ + if (str2[0] < '0') + goto nofont; + tfont[1] = (char *) malloc(strlen(str2) + 1); + strcpy(tfont[1], str2); + break; + + case 'b': /* bold */ + if (str2[0] < '0') + goto nofont; + tfont[2] = (char *) malloc(strlen(str2) + 1); + strcpy(tfont[2], str2); + break; + + case 's': /* special */ + if (str1[1] == 'c') + goto scalecommand; /* or scale */ + + if (str2[0] < '0') { + nofont: + error("no fontname specified in line %1", linenum); + break; + } + if (str1[1] == 't') + goto stipplecommand; /* or stipple */ + + tfont[3] = (char *) malloc(strlen(str2) + 1); + strcpy(tfont[3], str2); + break; + + case 'l': /* l */ + if (isdigit(str1[1])) { /* set stipple index */ + int index = atoi(str1 + 1), val; + + if (index < 0 || index > NSTIPPLES) { + error("bad stipple number %1 at line %2", index, linenum); + break; + } + if (!defstipple_index) + defstipple_index = other_stipple_index; + val = atoi(str2); + if (val >= 0 && val < 256) + stipple_index[index] = val; + else + error("bad stipple index value at line %1", linenum); + break; + } + + stipplecommand: /* set stipple name */ + stipple = (char *) malloc(strlen(str2) + 1); + strcpy(stipple, str2); + /* if its a `known' font (currently only `cf'), set indicies */ + if (strcmp(stipple, "cf") == 0) + defstipple_index = cf_stipple_index; + else + defstipple_index = other_stipple_index; + for (i = 0; i <= NSTIPPLES; i++) + stipple_index[i] = defstipple_index[i]; + break; + + case 'a': /* text adjust */ + par = atof(str2); + switch (str1[1]) { + case '1': + adj1 = par; + break; + case '2': + adj2 = par; + break; + case '3': + adj3 = par; + break; + case '4': + adj4 = par; + break; + default: + error("bad adjust command at line %1", linenum); + break; + } + break; + + case 't': /* thick */ + thick[2] = defthick[0] * atof(str2); + break; + + case 'm': /* medium */ + thick[5] = defthick[0] * atof(str2); + break; + + case 'n': /* narrow */ + thick[0] = thick[1] = thick[3] = thick[4] = + defthick[0] * atof(str2); + break; + + case 'x': /* x */ + scalecommand: /* scale */ + par = atof(str2); + if (par > 0.0) + xscale *= par; + else + error("illegal scale value on line %1", linenum); + break; + + case 'f': /* file */ + strcpy(gremlinfile, str2); + break; + + case 'w': /* width */ + width = atof(str2); + if (width < 0.0) + width = -width; + break; + + case 'h': /* height */ + height = atof(str2); + if (height < 0.0) + height = -height; + break; + + case 'd': /* defaults */ + setdefault = 1; + break; + + case 'p': /* pointscale */ + if (strcmp("off", str2)) + pointscale = 1; + else + pointscale = 0; + break; + + default: + error("unknown command `%1' on line %2", str1, linenum); + exit(8); + break; + }; +} + + +/* + * return TRUE if picture contains a polygon + * otherwise FALSE + */ + +int +has_polygon(register ELT *elist) +{ + while (!DBNullelt(elist)) { + if (elist->type == POLYGON) + return (1); + elist = DBNextElt(elist); + } + + return (0); +} + +/* EOF */ |