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/*=============================================================================
pamtable
===============================================================================
Print the raster as a table of numbers.
By Bryan Henderson, San Jose CA 2017.04.15.
Contributed to the public domain
=============================================================================*/
#include <math.h>
#include "pm_c_util.h"
#include "pam.h"
#include "shhopt.h"
#include "mallocvar.h"
#include "nstring.h"
enum Style {STYLE_BASIC, STYLE_TUPLE};
struct CmdlineInfo {
/* All the information the user supplied in the command line,
in a form easy for the program to use.
*/
const char * inputFileName; /* Name of input file */
enum Style outputStyle;
unsigned int hex;
unsigned int verbose;
};
static void
parseCommandLine(int argc, const char ** const argv,
struct CmdlineInfo * const cmdlineP) {
optEntry * option_def;
/* Instructions to OptParseOptions3 on how to parse our options.
*/
optStruct3 opt;
unsigned int option_def_index;
unsigned int tuple;
MALLOCARRAY(option_def, 100);
option_def_index = 0; /* incremented by OPTENT3 */
OPTENT3(0, "tuple", OPT_FLAG, NULL, &tuple, 0);
OPTENT3(0, "hex", OPT_FLAG, NULL, &cmdlineP->hex, 0);
OPTENT3(0, "verbose", OPT_FLAG, NULL, &cmdlineP->verbose, 0);
/* For future expansion */
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 */
pm_optParseOptions3(&argc, (char **)argv, opt, sizeof(opt), 0);
/* Uses and sets argc, argv, and some of *cmdlineP and others. */
if (tuple && cmdlineP->hex)
pm_error("-hex is invalid with -tuple");
if (tuple)
cmdlineP->outputStyle = STYLE_TUPLE;
else
cmdlineP->outputStyle = STYLE_BASIC;
if (argc-1 > 1)
pm_error("Too many arguments (%d). File name is the only argument.",
argc-1);
if (argc-1 < 1)
cmdlineP->inputFileName = "-";
else
cmdlineP->inputFileName = argv[1];
free(option_def);
}
typedef struct {
const char * sampleFmt;
/* Printf format of a sample, e.g. %3u */
const char * interSampleGutter;
/* What we print between samples within a tuple */
const char * interTupleGutter;
/* What we print between tuples within a row */
const char * rowStartString;
/* What we print at the beginning of each row */
const char * rowEndString;
/* What we print at the end of each row */
} Format;
static double const
log16(double const arg) {
return log(arg)/log(16);
}
static const char *
basicSampleFormat(const struct pam * const pamP,
bool const wantHex) {
/*----------------------------------------------------------------------------
The printf format string for a single sample in the output table.
E.g "%03u".
This format does not include any spacing between samples.
-----------------------------------------------------------------------------*/
unsigned int cipherWidth;
char formatSpecifier;
const char * flag;
const char * retval;
if (wantHex) {
formatSpecifier = 'x';
cipherWidth = ROUNDU(ceil(log16(pamP->maxval + 1)));
flag = "0";
} else {
formatSpecifier = 'u';
cipherWidth = ROUNDU(ceil(log10(pamP->maxval + 1)));
flag = "";
}
pm_asprintf(&retval, "%%%s%u%c", flag, cipherWidth, formatSpecifier);
return retval;
}
static void
makeFormat(const struct pam * const pamP,
enum Style const outputStyle,
bool const wantHex,
Format * const formatP) {
switch (outputStyle) {
case STYLE_BASIC:
formatP->sampleFmt = basicSampleFormat(pamP, wantHex);
formatP->interSampleGutter = " ";
formatP->interTupleGutter = pamP->depth > 1 ? "|" : " ";
formatP->rowStartString = "";
formatP->rowEndString = "\n";
break;
case STYLE_TUPLE:
formatP->sampleFmt = pm_strdup("%u");
formatP->interSampleGutter = ",";
formatP->interTupleGutter = ") (";
formatP->rowStartString = "(";
formatP->rowEndString = ")\n";
break;
}
}
static void
unmakeFormat(Format * const formatP) {
pm_strfree(formatP->sampleFmt);
}
static void
printRow(const struct pam * const pamP,
tuple * const tupleRow,
Format const format,
FILE * const ofP) {
unsigned int col;
fputs (format.rowStartString, ofP);
for (col = 0; col < pamP->width; ++col) {
unsigned int plane;
if (col > 0)
fputs(format.interTupleGutter, ofP);
for (plane = 0; plane < pamP->depth; ++plane) {
if (plane > 0)
fputs(format.interSampleGutter, ofP);
fprintf(ofP, format.sampleFmt, tupleRow[col][plane]);
}
}
fputs (format.rowEndString, ofP);
}
static void
printRaster(FILE * const ifP,
const struct pam * const pamP,
FILE * const ofP,
enum Style const outputStyle,
bool const wantHex) {
Format format;
tuple * inputRow; /* Row from input image */
unsigned int row;
makeFormat(pamP, outputStyle, wantHex, &format);
inputRow = pnm_allocpamrow(pamP);
for (row = 0; row < pamP->height; ++row) {
pnm_readpamrow(pamP, inputRow);
printRow(pamP, inputRow, format, ofP);
}
pnm_freepamrow(inputRow);
unmakeFormat(&format);
}
int
main(int argc, const char *argv[]) {
FILE * ifP;
struct CmdlineInfo cmdline;
struct pam inpam; /* Input PAM image */
pm_proginit(&argc, argv);
parseCommandLine(argc, argv, &cmdline);
ifP = pm_openr(cmdline.inputFileName);
pnm_readpaminit(ifP, &inpam, PAM_STRUCT_SIZE(tuple_type));
printRaster(ifP, &inpam, stdout, cmdline.outputStyle, cmdline.hex);
pm_close(inpam.file);
return 0;
}
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