ref: 128ea44a89c7905612ad2fa5a61a9325ddfb5e1e
dir: /sys/src/cmd/pic/main.c/
#include <stdio.h> #include <signal.h> #include <stdlib.h> #include <string.h> #include "pic.h" #include "y.tab.h" char *version = "version July 5, 1993"; obj **objlist = 0; /* store the elements here */ int nobjlist = 0; /* size of objlist array */ int nobj = 0; Attr *attr; /* attributes stored here as collected */ int nattrlist = 0; int nattr = 0; /* number of entries in attr_list */ Text *text = 0; /* text strings stored here as collected */ int ntextlist = 0; /* size of text[] array */ int ntext = 0; int ntext1 = 0; /* record ntext here on entry to each figure */ double curx = 0; double cury = 0; int hvmode = R_DIR; /* R => join left to right, D => top to bottom, etc. */ int codegen = 0; /* 1=>output for this picture; 0=>no output */ char *PEstring; /* "PS" or "PE" picked up by lexer */ double deltx = 6; /* max x value in output, for scaling */ double delty = 6; /* max y value in output, for scaling */ int dbg = 0; int lineno = 0; char *filename = "-"; int synerr = 0; int anyerr = 0; /* becomes 1 if synerr ever 1 */ char *cmdname; double xmin = 30000; /* min values found in actual data */ double ymin = 30000; double xmax = -30000; /* max */ double ymax = -30000; void fpecatch(int); void getdata(void), setdefaults(void); void setfval(char *, double); int getpid(void); main(int argc, char *argv[]) { char buf[20]; signal(SIGFPE, fpecatch); cmdname = argv[0]; while (argc > 1 && *argv[1] == '-') { switch (argv[1][1]) { case 'd': dbg = atoi(&argv[1][2]); if (dbg == 0) dbg = 1; fprintf(stderr, "%s\n", version); break; case 'V': fprintf(stderr, "%s\n", version); return 0; } argc--; argv++; } setdefaults(); objlist = (obj **) grow((char *)objlist, "objlist", nobjlist += 1000, sizeof(obj *)); text = (Text *) grow((char *)text, "text", ntextlist += 1000, sizeof(Text)); attr = (Attr *) grow((char *)attr, "attr", nattrlist += 100, sizeof(Attr)); sprintf(buf, "/%d/", getpid()); pushsrc(String, buf); definition("pid"); curfile = infile; pushsrc(File, curfile->fname); if (argc <= 1) { curfile->fin = stdin; curfile->fname = tostring("-"); getdata(); } else while (argc-- > 1) { if ((curfile->fin = fopen(*++argv, "r")) == NULL) { fprintf(stderr, "%s: can't open %s\n", cmdname, *argv); exit(1); } curfile->fname = tostring(*argv); getdata(); fclose(curfile->fin); free(curfile->fname); } return anyerr; } void fpecatch(int n) { ERROR "floating point exception %d", n FATAL; } char *grow(char *ptr, char *name, int num, int size) /* make array bigger */ { char *p; if (ptr == NULL) p = malloc(num * size); else p = realloc(ptr, num * size); if (p == NULL) ERROR "can't grow %s to %d", name, num * size FATAL; return p; } static struct { char *name; double val; short scalable; /* 1 => adjust when "scale" changes */ } defaults[] ={ "scale", SCALE, 1, "lineht", HT, 1, "linewid", HT, 1, "moveht", HT, 1, "movewid", HT, 1, "dashwid", HT10, 1, "boxht", HT, 1, "boxwid", WID, 1, "circlerad", HT2, 1, "arcrad", HT2, 1, "ellipseht", HT, 1, "ellipsewid", WID, 1, "arrowht", HT5, 1, "arrowwid", HT10, 1, "arrowhead", 2, 0, /* arrowhead style */ "textht", 0.0, 1, /* 6 lines/inch is also a useful value */ "textwid", 0.0, 1, "maxpsht", MAXHT, 0, "maxpswid", MAXWID, 0, "fillval", 0.7, 0, /* gray value for filling boxes */ NULL, 0, 0 }; void setdefaults(void) /* set default sizes for variables like boxht */ { int i; YYSTYPE v; for (i = 0; defaults[i].name != NULL; i++) { v.f = defaults[i].val; makevar(tostring(defaults[i].name), VARNAME, v); } } void resetvar(void) /* reset variables listed */ { int i, j; if (nattr == 0) { /* none listed, so do all */ setdefaults(); return; } for (i = 0; i < nattr; i++) { for (j = 0; defaults[j].name != NULL; j++) if (strcmp(defaults[j].name, attr[i].a_val.p) == 0) { setfval(defaults[j].name, defaults[j].val); free(attr[i].a_val.p); break; } } } void checkscale(char *s) /* if s is "scale", adjust default variables */ { int i; double scale; if (strcmp(s, "scale") == 0) { scale = getfval("scale"); for (i = 1; defaults[i].name != NULL; i++) if (defaults[i].scalable) setfval(defaults[i].name, defaults[i].val * scale); } } void getdata(void) { char *p, buf[1000], buf1[100]; int ln; void reset(void), openpl(char *), closepl(char *), print(void); int yyparse(void); curfile->lineno = 0; printlf(1, curfile->fname); while (fgets(buf, sizeof buf, curfile->fin) != NULL) { curfile->lineno++; if (*buf == '.' && *(buf+1) == 'P' && *(buf+2) == 'S') { for (p = &buf[3]; *p == ' '; p++) ; if (*p++ == '<') { Infile svfile; svfile = *curfile; sscanf(p, "%s", buf1); if ((curfile->fin=fopen(buf1, "r")) == NULL) ERROR "can't open %s", buf1 FATAL; curfile->fname = tostring(buf1); getdata(); fclose(curfile->fin); free(curfile->fname); *curfile = svfile; printlf(curfile->lineno, curfile->fname); continue; } reset(); yyparse(); anyerr += synerr; deltx = (xmax - xmin) / getfval("scale"); delty = (ymax - ymin) / getfval("scale"); if (buf[3] == ' ') { /* next things are wid & ht */ if (sscanf(&buf[4],"%lf %lf", &deltx, &delty) < 2) delty = deltx * (ymax-ymin) / (xmax-xmin); /* else { /* double xfac, yfac; */ /* xfac = deltx / (xmax-xmin); /* yfac = delty / (ymax-ymin); /* if (xfac <= yfac) /* delty = xfac * (ymax-ymin); /* else /* deltx = yfac * (xmax-xmin); /*} */ } dprintf("deltx = %g, delty = %g\n", deltx, delty); if (codegen && !synerr) { openpl(&buf[3]); /* puts out .PS, with ht & wid stuck in */ printlf(curfile->lineno+1, NULL); print(); /* assumes \n at end */ closepl(PEstring); /* does the .PE/F */ free(PEstring); } printlf(curfile->lineno+1, NULL); fflush(stdout); } else if (buf[0] == '.' && buf[1] == 'l' && buf[2] == 'f') { if (sscanf(buf+3, "%d %s", &ln, buf1) == 2) { free(curfile->fname); printlf(curfile->lineno = ln, curfile->fname = tostring(buf1)); } else printlf(curfile->lineno = ln, NULL); } else fputs(buf, stdout); } } void reset(void) { obj *op; int i; extern int nstack; extern void freesymtab(struct symtab *); for (i = 0; i < nobj; i++) { op = objlist[i]; if (op->o_type == BLOCK) freesymtab(op->o_symtab); free((char *)objlist[i]); } nobj = 0; nattr = 0; for (i = 0; i < ntext; i++) if (text[i].t_val) free(text[i].t_val); ntext = ntext1 = 0; codegen = synerr = 0; nstack = 0; curx = cury = 0; PEstring = 0; hvmode = R_DIR; xmin = ymin = 30000; xmax = ymax = -30000; }