diff options
Diffstat (limited to 'converter/pbm/pbmtoxbm.c')
| -rw-r--r-- | converter/pbm/pbmtoxbm.c | 410 |
1 files changed, 328 insertions, 82 deletions
diff --git a/converter/pbm/pbmtoxbm.c b/converter/pbm/pbmtoxbm.c index 96830a0c..340642ce 100644 --- a/converter/pbm/pbmtoxbm.c +++ b/converter/pbm/pbmtoxbm.c @@ -1,4 +1,4 @@ -/* pbmtoxbm.c - read a portable bitmap and produce an X11 bitmap file +/* pbmtoxbm.c - read a PBM image and produce an X11/X10 bitmap file ** ** Copyright (C) 1988 by Jef Poskanzer. ** @@ -10,17 +10,114 @@ ** implied warranty. */ +/* 2006.10 (afu) + Changed bitrow from plain to raw, read function from pbm_readpbmrow() to + pbm_readpbmrow_packed(). Retired bitwise transformation functions. + + Output function putitem rewritten to handle both X10 and X11. + + Added -name option. There is no check for the string thus given. + +*/ + #define _BSD_SOURCE 1 /* Make sure strdup() is in string.h */ #define _XOPEN_SOURCE 500 /* Make sure strdup() is in string.h */ #include <string.h> +#include "pm_c_util.h" #include "pbm.h" +#include "shhopt.h" +#include "mallocvar.h" +#include "bitreverse.h" #include "nstring.h" +enum xbmVersion { X10, X11 }; + +struct cmdlineInfo { + /* All the information the user supplied in the command line, + in a form easy for the program to use. + */ + const char * inputFileName; + const char * name; + enum xbmVersion xbmVersion; +}; + +static void +parseCommandLine(int argc, + char ** argv, + struct cmdlineInfo *cmdlineP ) { +/*---------------------------------------------------------------------------- + Parse program command line described in Unix standard form by argc + and argv. Return the information in the options as *cmdlineP. + + If command line is internally inconsistent (invalid options, etc.), + issue error message to stderr and abort program. + + Note that the strings we return are stored in the storage that + was passed to us as the argv array. We also trash *argv. +-----------------------------------------------------------------------------*/ + optEntry *option_def; + /* Instructions to optParseOptions3 on how to parse our options. */ + + optStruct3 opt; + unsigned int option_def_index; + unsigned int x10, x11, nameSpec; + MALLOCARRAY_NOFAIL(option_def, 100); + + option_def_index = 0; /* incremented by OPTENT3 */ + + OPTENT3(0, "name", OPT_STRING, &cmdlineP->name, &nameSpec, 0); + OPTENT3(0, "x10" , OPT_FLAG, NULL, &x10, 0); + OPTENT3(0, "x11" , OPT_FLAG, NULL, &x11, 0); + + opt.opt_table = option_def; + opt.short_allowed = FALSE; /* We have no short (old-fashioned) options */ + opt.allowNegNum = FALSE; /* We have no parms that are negative numbers */ + + optParseOptions3( &argc, argv, opt, sizeof(opt), 0); + /* Uses and sets argc, argv, and some of *cmdlineP and others. */ + + if (!nameSpec) + cmdlineP->name = NULL; + else if (strlen(cmdlineP->name) > 56) + pm_error("Image name too long: %d chars. (max 56)", + strlen(cmdlineP->name)); + else if (!ISALPHA(cmdlineP->name[0]) && cmdlineP->name[0] !='_') + pm_error("Image name '%s' starts with non-alphabet character.", + cmdlineP->name); + else { + unsigned int i; + for (i = 0 ; i < strlen(cmdlineP->name); ++i) + if (!ISALNUM(cmdlineP->name[i]) && cmdlineP->name[i] != '_') + pm_error("Image name '%s' contains invalid character (%c).", + cmdlineP->name, cmdlineP->name[i]); + } + + if (x10 && x11) + pm_error("You can't specify both -x10 and -x11"); + else if (x10) + cmdlineP->xbmVersion = X10; + else + cmdlineP->xbmVersion = X11; + + if (argc-1 < 1) + cmdlineP->inputFileName = "-"; + else { + cmdlineP->inputFileName = argv[1]; + + if (argc-1 > 1) + pm_error("Program takes zero or one argument (filename). You " + "specified %u", argc-1); + } +} + + + static void -generateName(char const filenameArg[], const char ** const nameP) { +generateName(char const filenameArg[], + const char ** const nameP) { /*---------------------------------------------------------------------------- Generate a name for the image to put in the bitmap file. Derive it from the filename argument filenameArg[] and return it as a null-terminated @@ -34,7 +131,7 @@ generateName(char const filenameArg[], const char ** const nameP) { "noname". Also, if the argument is null or ends in a slash, we return "noname". -----------------------------------------------------------------------------*/ - if (STREQ(filenameArg, "-")) + if (streq(filenameArg, "-")) *nameP = strdup("noname"); else { int nameIndex, argIndex; @@ -67,99 +164,248 @@ generateName(char const filenameArg[], const char ** const nameP) { -int -main(int argc, char * argv[]) { +static unsigned short int itemBuff[22]; +static int itemCnt; /* takes values 0 to 15 (x11) or 21 (x10) */ +static enum xbmVersion itemVersion; - FILE* ifp; - bit* bitrow; - int rows, cols, format; - int padright; - int row; - const char * inputFilename; - const char *name; - int itemsperline; - int bitsperitem; - int item; - int firstitem; - const char hexchar[] = "0123456789abcdef"; - pbm_init(&argc, argv); - if (argc-1 > 1) - pm_error("Too many arguments (%d). The only valid argument is an " - "input file name.", argc-1); - else if (argc-1 == 1) - inputFilename = argv[1]; - else - inputFilename = "-"; +static void +putitemX10(unsigned char const item) { - generateName(inputFilename, &name); - ifp = pm_openr(inputFilename); - - pbm_readpbminit(ifp, &cols, &rows, &format); - bitrow = pbm_allocrow(cols); - - /* Compute padding to round cols up to the nearest multiple of 8. */ - padright = ((cols + 7)/8) * 8 - cols; - - printf("#define %s_width %d\n", name, cols); - printf("#define %s_height %d\n", name, rows); - printf("static char %s_bits[] = {\n", name); - - itemsperline = 0; - bitsperitem = 0; - item = 0; - firstitem = 1; - -#define PUTITEM \ - { \ - if ( firstitem ) \ - firstitem = 0; \ - else \ - putchar( ',' ); \ - if ( itemsperline == 15 ) \ - { \ - putchar( '\n' ); \ - itemsperline = 0; \ - } \ - if ( itemsperline == 0 ) \ - putchar( ' ' ); \ - ++itemsperline; \ - putchar('0'); \ - putchar('x'); \ - putchar(hexchar[item >> 4]); \ - putchar(hexchar[item & 15]); \ - bitsperitem = 0; \ - item = 0; \ + if (itemCnt == 22) { + /* Buffer is full. Write out one line. */ + int rc; + rc = printf(" 0x%02x%02x,0x%02x%02x,0x%02x%02x,0x%02x%02x," + "0x%02x%02x,0x%02x%02x,0x%02x%02x,0x%02x%02x," + "0x%02x%02x,0x%02x%02x,0x%02x%02x,\n", + itemBuff[ 1], itemBuff[ 0], itemBuff[ 3], itemBuff[ 2], + itemBuff[ 5], itemBuff[ 4], itemBuff[ 7], itemBuff[ 6], + itemBuff[ 9], itemBuff[ 8], itemBuff[11], itemBuff[10], + itemBuff[13], itemBuff[12], itemBuff[15], itemBuff[14], + itemBuff[17], itemBuff[16], itemBuff[19], itemBuff[18], + itemBuff[21], itemBuff[20] + ); + + if (rc < 0) + pm_error("Error writing X10 bitmap raster item. " + "printf() failed with errno %d (%s)", + errno, strerror(errno)); + + itemCnt = 0; } + itemBuff[itemCnt++] = bitreverse[item]; +} + -#define PUTBIT(b) \ - { \ - if ( bitsperitem == 8 ) \ - PUTITEM; \ - if ( (b) == PBM_BLACK ) \ - item += 1 << bitsperitem; \ - ++bitsperitem; \ + +static void +putitemX11(unsigned char const item) { + + if (itemCnt == 15 ) { + /* Buffer is full. Write out one line. */ + int rc; + rc = printf(" 0x%02x,0x%02x,0x%02x,0x%02x," + "0x%02x,0x%02x,0x%02x,0x%02x," + "0x%02x,0x%02x,0x%02x,0x%02x," + "0x%02x,0x%02x,0x%02x,\n", + itemBuff[0], itemBuff[1], itemBuff[2], itemBuff[3], + itemBuff[4], itemBuff[5], itemBuff[6], itemBuff[7], + itemBuff[8], itemBuff[9], itemBuff[10],itemBuff[11], + itemBuff[12],itemBuff[13],itemBuff[14] + ); + if (rc < 0) + pm_error("Error writing X11 bitmap raster item. " + "printf() failed with errno %d (%s)", + errno, strerror(errno)); + + itemCnt = 0; } + itemBuff[itemCnt++] = bitreverse[item]; +} - for (row = 0; row < rows; ++row) { - int col; - pbm_readpbmrow(ifp, bitrow, cols, format); - for (col = 0; col < cols; ++col) - PUTBIT(bitrow[col]); - for (col = 0; col < padright; ++col) - PUTBIT(0); + + +static void +putitem(unsigned char const item) { + + switch (itemVersion) { + case X10: putitemX10(item); break; + case X11: putitemX11(item); break; } +} + + + +static void +puttermX10(void) { + + unsigned int i; + + for (i = 0; i < itemCnt; i += 2) { + int rc; + + rc = printf("%s0x%02x%02x%s", + (i == 0) ? " " : "", + itemBuff[i+1], + itemBuff[i], + (i == itemCnt - 2) ? "" : ","); + if (rc < 0) + pm_error("Error writing end of X10 bitmap raster. " + "printf() failed with errno %d (%s)", + errno, strerror(errno)); + } +} + + + +static void +puttermX11(void) { + + unsigned int i; - pm_close(ifp); + for (i = 0; i < itemCnt; ++i) { + int rc; - if (bitsperitem > 0) - PUTITEM; - printf("};\n"); + rc = printf("%s0x%02x%s", + (i == 0) ? " " : "", + itemBuff[i], + (i == itemCnt - 1) ? "" : ","); + + if (rc < 0) + pm_error("Error writing end of X11 bitmap raster. " + "printf() failed with errno %d (%s)", + errno, strerror(errno)); + } +} + + + +static void +putinit(enum xbmVersion const xbmVersion) { + + itemCnt = 0; + itemVersion = xbmVersion; +} + + + +static void +putterm(void) { + + switch (itemVersion) { + case X10: puttermX10(); break; + case X11: puttermX11(); break; + } + + { + int rc; + + rc = printf("};\n"); + + if (rc < 0) + pm_error("Error writing end of X11 bitmap raster. " + "printf() failed with errno %d (%s)", + errno, strerror(errno)); + } +} + + + +static void +writeXbmHeader(enum xbmVersion const xbmVersion, + const char * const name, + unsigned int const width, + unsigned int const height, + FILE * const ofP) { + + printf("#define %s_width %d\n", name, width); + printf("#define %s_height %d\n", name, height); + printf("static %s %s_bits[] = {\n", + xbmVersion == X10 ? "short" : "char", + name); +} + + + +static void +convertRaster(FILE * const ifP, + unsigned int const cols, + unsigned int const rows, + int const format, + FILE * const ofP, + enum xbmVersion const xbmVersion) { + + unsigned int const bitsPerUnit = xbmVersion == X10 ? 16 : 8; + unsigned int const padright = + ((cols + bitsPerUnit - 1 ) / bitsPerUnit) * bitsPerUnit - cols; + /* Amount of padding to round cols up to the nearest multiple of + 8 (if x11) or 16 (if x10). + */ + unsigned int const bitrowBytes = (cols + padright) / 8; + + unsigned char * bitrow; + unsigned int row; + + putinit(xbmVersion); + + bitrow = pbm_allocrow_packed(cols + padright); + + for (row = 0; row < rows; ++row) { + int const bitrowInBytes = pbm_packed_bytes(cols); + int const padrightIn = bitrowInBytes * 8 - cols; + + unsigned int i; + + pbm_readpbmrow_packed(ifP, bitrow, cols, format); + + if (padrightIn > 0) { + bitrow[bitrowInBytes - 1] >>= padrightIn; + bitrow[bitrowInBytes - 1] <<= padrightIn; + } + + if (padright >= 8) + bitrow[bitrowBytes-1] = 0x00; + + for (i = 0; i < bitrowBytes; ++i) + putitem(bitrow[i]); + } + + putterm(); pbm_freerow(bitrow); +} + + + +int +main(int argc, + char * argv[]) { + + struct cmdlineInfo cmdline; + FILE * ifP; + int rows, cols, format; + const char * name; + + pbm_init(&argc, argv); + + parseCommandLine(argc, argv, &cmdline); + if (cmdline.name == NULL) + generateName(cmdline.inputFileName, &name); + else + name = strdup(cmdline.name); + + ifP = pm_openr(cmdline.inputFileName); + + pbm_readpbminit(ifP, &cols, &rows, &format); + + writeXbmHeader(cmdline.xbmVersion, name, cols, rows, stdout); + + convertRaster(ifP, cols, rows, format, stdout, cmdline.xbmVersion); strfree(name); + pm_close(ifP); - exit(0); + return 0; } + |