diff options
Diffstat (limited to 'converter/ppm/sldtoppm.c')
| -rw-r--r-- | converter/ppm/sldtoppm.c | 137 |
1 files changed, 78 insertions, 59 deletions
diff --git a/converter/ppm/sldtoppm.c b/converter/ppm/sldtoppm.c index ad16a649..6ba4cb40 100644 --- a/converter/ppm/sldtoppm.c +++ b/converter/ppm/sldtoppm.c @@ -26,23 +26,20 @@ #include <string.h> #include <math.h> +#include "pm_c_util.h" #include "ppm.h" #include "ppmdraw.h" #include "nstring.h" -#ifdef DEBUG #include <assert.h> -#else -#define assert(x) -#endif + +#include "autocad.h" /* AutoCAD standard color assignments */ + /* Define a variable type accepting numbers -127 <= n <= 127. But note that we still expect it to act UNSIGNED. */ #define smallint unsigned char /* Small integers */ -#define TRUE 1 -#define FALSE 0 - #define EOS '\0' /* Screen point */ @@ -70,18 +67,17 @@ typedef void (slvecfn)(struct svector * vec, int color); typedef void (slfloodfn)(struct spolygon * poly, int color); +static unsigned long const pixmaxval = 255; /* Largest pixel value */ + static int ixdots, iydots; /* Screen size in dots */ -static FILE *slfile; /* Slide file descriptor */ -static int blither = FALSE; /* Dump slide file information ? */ -static int info = FALSE; /* Print header information */ +static FILE * slfile; /* Slide file descriptor */ +static bool blither; /* Dump slide file information ? */ +static bool info; /* Print header information */ static pixel **pixels; /* Pixel map */ -static int pixcols, pixrows; /* Pixel map size */ -#define pixmaxval 255 /* Largest pixel value */ +static int pixcols, pixrows; /* Pixel map size */ static double uscale = -1; /* Uniform scale factor */ static int sxsize = -1, sysize = -1; /* Scale to X, Y size ? */ -#include "autocad.h" /* AutoCAD standard color assignments */ - /* Local variables */ struct slhead { @@ -94,11 +90,11 @@ struct slhead { char spad; /* Pad to even byte length */ }; -static int adjust = FALSE; /* Adjust to correct aspect ratio ? */ -static struct slhead slfrof; /* Slide file header */ -static long xfac, yfac; /* Aspect ratio scale factors */ +static bool adjust; /* Adjust to correct aspect ratio ? */ +static struct slhead slfrof; /* Slide file header */ +static long xfac, yfac; /* Aspect ratio scale factors */ -static int sdrawkcab; +static bool sdrawkcab; /* Slide drawing kinematic conversion of ass-backwards data flag */ @@ -108,7 +104,7 @@ static int sdrawkcab; */ static int -extend(smallint ch) { +extend(unsigned char const ch) { return ((int) ((ch & 0x80) ? (ch | ~0xFF) : ch)); } @@ -136,9 +132,9 @@ sli(void) { static int slib(void) { - smallint ch = 0; + unsigned char ch; - if (fread(&ch, sizeof ch, 1, slfile) != 1) { + if (fread(&ch, sizeof(ch), 1, slfile) != 1) { pm_error("error reading slide file"); } return extend(ch); @@ -171,22 +167,28 @@ slidefind(const char * const sname, char uname[32]; unsigned char libent[36]; long pos; + bool found; + bool eof; if (dironly) pm_message("Slides in library:"); else { - int i; + unsigned int i; const char * ip; ip = sname; /* initial value */ - for (i = 0; i < 31; i++) { - char ch = *ip++; + for (i = 0; i < 31; ++i) { + char const ch = *ip++; if (ch == EOS) break; - if (ucasen && ISLOWER(ch)) - ch = TOUPPER(ch); - uname[i] = ch; + + { + char const upperCh = + ucasen && islower(ch) ? toupper(ch) : ch; + + uname[i] = upperCh; + } } uname[i] = EOS; } @@ -199,31 +201,38 @@ slidefind(const char * const sname, } pos = 32; - /* Search for a slide with the requested name. */ + /* Search for a slide with the requested name or list the directory */ - while (TRUE) { - if ((fread(libent, 36, 1, slfile) != 1) || - (strlen((char *)libent) == 0)) { - if (dironly) { - return; - } - pm_error("slide %s not in library.", sname); - } + for (found = false, eof = false; !found && !eof; ) { + size_t readCt; + readCt = fread(libent, 36, 1, slfile); + if (readCt != 1) + eof = true; + else if (strlen((char *)libent) == 0) + eof = true; + } + if (!eof) { pos += 36; if (dironly) { pm_message(" %s", libent); } else if (streq((char *)libent, uname)) { - long dpos = (((((libent[35] << 8) | libent[34]) << 8) | - libent[33]) << 8) | libent[32]; + long dpos; + + dpos = (((((libent[35] << 8) | libent[34]) << 8) | + libent[33]) << 8) | libent[32]; + if ((slfile == stdin) || (fseek(slfile, dpos, 0) == -1)) { dpos -= pos; while (dpos-- > 0) getc(slfile); } - break; + found = true; } } + + if (!found && !dironly) + pm_error("slide '%s' not in library.", sname); } @@ -329,7 +338,7 @@ slider(slvecfn slvec, /* Process the header of the slide file. */ - sdrawkcab = FALSE; /* Initially guess byte order is OK */ + sdrawkcab = false; /* Initially guess byte order is OK */ fread(slfrof.slh, 17, 1, slfile); fread(&slfrof.sntype, sizeof(char), 1, slfile); fread(&slfrof.slevel, sizeof(char), 1, slfile); @@ -364,12 +373,12 @@ slider(slvecfn slvec, */ if (btest != rtest) { - sdrawkcab = TRUE; -#define rshort(x) x = ((x >> 8) & 0xFF) | (x << 8) + sdrawkcab = true; + #define rshort(x) x = ((x >> 8) & 0xFF) | (x << 8) rshort(slfrof.sxdots); rshort(slfrof.sydots); rshort(slfrof.shwfill); -#undef rshort + #undef rshort } /* Dump the header if we're blithering. */ @@ -413,7 +422,7 @@ slider(slvecfn slvec, ixdots = slfrof.sxdots; iydots = slfrof.sydots; dsar = slfrof.sdsar; - adjust = FALSE; /* Mark no adjustment needed */ + adjust = false; /* Mark no adjustment needed */ } /* If there's a uniform scale factor specified, apply it. */ @@ -571,32 +580,42 @@ slider(slvecfn slvec, /* Main program. */ int -main(int argc, - char * argv[]) { +main(int argc, + const char * argv[]) { int argn; const char * const usage = "[-verbose] [-info] [-adjust] [-scale <s>]\n\ [-dir] [-lib|-Lib <name>]\n\ [-xsize|-width <x>] [-ysize|-height <y>] [sldfile]"; - int scalespec = FALSE, widspec = FALSE, hgtspec = FALSE, dironly = FALSE, - ucasen; + bool dironly; + bool hgtspec; + bool widspec; + bool scalespec; + bool ucasen; const char * slobber; /* Slide library item */ + pm_proginit(&argc, argv); + argn = 1; slobber = NULL; - - ppm_init(&argc, argv); - argn = 1; + dironly = false; + hgtspec = false; + widspec = false; + scalespec = false; + ucasen = false; + blither = false; + info = false; + adjust = false; while (argn < argc && argv[argn][0] == '-' && argv[argn][1] != '\0') { if (pm_keymatch(argv[argn], "-verbose", 2)) { - blither = TRUE; + blither = true; } else if (pm_keymatch(argv[argn], "-adjust", 2)) { - adjust = TRUE; + adjust = true; } else if (pm_keymatch(argv[argn], "-dir", 2)) { - dironly = TRUE; + dironly = true; } else if (pm_keymatch(argv[argn], "-info", 2)) { - info = TRUE; + info = true; } else if (pm_keymatch(argv[argn], "-lib", 2)) { if (slobber) pm_error("already specified a library item"); @@ -616,7 +635,7 @@ main(int argc, if (uscale <= 0.0) { pm_error("scale factor must be greater than 0"); } - scalespec = TRUE; + scalespec = true; } else if (pm_keymatch(argv[argn], "-xsize", 2) || pm_keymatch(argv[argn], "-width", 2)) { if (widspec) { @@ -625,7 +644,7 @@ main(int argc, argn++; if ((argn == argc) || (sscanf(argv[argn], "%d", &sxsize) != 1)) pm_usage(usage); - widspec = TRUE; + widspec = true; } else if (pm_keymatch(argv[argn], "-ysize", 2) || pm_keymatch(argv[argn], "-height", 2)) { if (hgtspec) { @@ -634,7 +653,7 @@ main(int argc, argn++; if ((argn == argc) || (sscanf(argv[argn], "%d", &sysize) != 1)) pm_usage(usage); - hgtspec = TRUE; + hgtspec = true; } else { pm_usage(usage); } @@ -665,7 +684,7 @@ main(int argc, if (!dironly) { slider(draw, flood); - ppm_writeppm(stdout, pixels, pixcols, pixrows, pixmaxval, FALSE); + ppm_writeppm(stdout, pixels, pixcols, pixrows, pixmaxval, 0); } pm_close(slfile); pm_close(stdout); |