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Imported from libpng-1.0.6.tar

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This commit is contained in:
Glenn Randers-Pehrson
2000-03-21 05:13:06 -06:00
parent a77ef625a6
commit 520a764cd7
74 changed files with 2298 additions and 1436 deletions
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100
contrib/gregbook/wpng.c
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@@ -19,7 +19,15 @@
---------------------------------------------------------------------------
Copyright (c) 1998-1999 Greg Roelofs. All rights reserved.
Changelog:
- 1.01: initial public release
- 1.02: modified to allow abbreviated options
- 1.03: removed extraneous character from usage screen; fixed bug in
command-line parsing
---------------------------------------------------------------------------
Copyright (c) 1998-2000 Greg Roelofs. All rights reserved.
This software is provided "as is," without warranty of any kind,
express or implied. In no event shall the author or contributors
@@ -45,7 +53,7 @@
---------------------------------------------------------------------------*/
#define PROGNAME "wpng"
#define VERSION "1.01 of 31 March 1999"
#define VERSION "1.03 of 19 March 2000"
#define APPNAME "Simple PGM/PPM/PAM to PNG Converter"
#if defined(__MSDOS__) || defined(__OS2__)
@@ -57,27 +65,27 @@
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <setjmp.h> /* for jmpbuf declaration in writepng.h */
#include <setjmp.h> /* for jmpbuf declaration in writepng.h */
#include <time.h>
#ifdef DOS_OS2_W32
# include <io.h> /* for isatty(), setmode() prototypes */
# include <fcntl.h> /* O_BINARY for fdopen() without text translation */
# include <io.h> /* for isatty(), setmode() prototypes */
# include <fcntl.h> /* O_BINARY for fdopen() without text translation */
# ifdef __EMX__
# ifndef getch
# define getch() _read_kbd(0, 1, 0) /* need getche() */
# define getch() _read_kbd(0, 1, 0) /* need getche() */
# endif
# else /* !__EMX__ */
# ifdef __GO32__
# include <pc.h>
# define getch() getkey() /* GRR: need getche() */
# define getch() getkey() /* GRR: need getche() */
# else
# include <conio.h> /* for getche() console input */
# include <conio.h> /* for getche() console input */
# endif
# endif /* ?__EMX__ */
# define FGETS(buf,len,stream) dos_kbd_gets(buf,len)
#else
# include <unistd.h> /* for isatty() prototype */
# include <unistd.h> /* for isatty() prototype */
# define FGETS fgets
#endif
@@ -87,7 +95,7 @@
text that includes control characters discouraged by the PNG spec; text
that includes an escape character (27) must be re-entered regardless */
#include "writepng.h" /* typedefs, common macros, writepng prototypes */
#include "writepng.h" /* typedefs, common macros, writepng prototypes */
@@ -112,7 +120,7 @@ int main(int argc, char **argv)
FILE *keybd;
#endif
#ifdef sgi
FILE *tmpfile; /* or we could just use keybd, since no overlap */
FILE *tmpfile; /* or we could just use keybd, since no overlap */
char tmpline[80];
#endif
char *inname = NULL, outname[256];
@@ -204,36 +212,40 @@ int main(int argc, char **argv)
/* Now parse the command line for options and the PNM filename. */
while (*++argv && !error) {
if (!strcmp(*argv, "-interlaced")) {
if (!strncmp(*argv, "-i", 2)) {
wpng_info.interlaced = TRUE;
} else if (!strcmp(*argv, "-time")) {
} else if (!strncmp(*argv, "-time", 3)) {
wpng_info.modtime = time(NULL);
wpng_info.have_time = TRUE;
} else if (!strcmp(*argv, "-text")) {
} else if (!strncmp(*argv, "-text", 3)) {
text = TRUE;
} else if (!strcmp(*argv, "-gamma")) {
} else if (!strncmp(*argv, "-gamma", 2)) {
if (!*++argv)
++error;
wpng_info.gamma = atof(*argv);
if (wpng_info.gamma <= 0.0)
++error;
else if (wpng_info.gamma > 1.01)
fprintf(stderr, PROGNAME
" warning: file gammas are usually less than 1.0\n");
} else if (!strcmp(*argv, "-bgcolor")) {
if (!*++argv)
++error;
bgstr = *argv;
if (strlen(bgstr) != 7 || bgstr[0] != '#')
++error;
else {
unsigned r, g, b; /* this approach quiets compiler warnings */
wpng_info.gamma = atof(*argv);
if (wpng_info.gamma <= 0.0)
++error;
else if (wpng_info.gamma > 1.01)
fprintf(stderr, PROGNAME
" warning: file gammas are usually less than 1.0\n");
}
} else if (!strncmp(*argv, "-bgcolor", 4)) {
if (!*++argv)
++error;
else {
bgstr = *argv;
if (strlen(bgstr) != 7 || bgstr[0] != '#')
++error;
else {
unsigned r, g, b; /* this way quiets compiler warnings */
sscanf(bgstr+1, "%2x%2x%2x", &r, &g, &b);
wpng_info.bg_red = (uch)r;
wpng_info.bg_green = (uch)g;
wpng_info.bg_blue = (uch)b;
wpng_info.have_bg = TRUE;
sscanf(bgstr+1, "%2x%2x%2x", &r, &g, &b);
wpng_info.bg_red = (uch)r;
wpng_info.bg_green = (uch)g;
wpng_info.bg_blue = (uch)b;
wpng_info.have_bg = TRUE;
}
}
} else {
if (**argv != '-') {
@@ -362,7 +374,7 @@ int main(int argc, char **argv)
"\t\t (where LUT = lookup-table exponent and CRT = CRT exponent;\n"
"\t\t first varies, second is usually 2.2, all are positive)\n"
" bg \tdesired background color for alpha-channel images, in\n"
"\t\t 7-character hex RGB format (e.g., ``#ff7f00'' for orange:\n"
"\t\t 7-character hex RGB format (e.g., ``#ff7700'' for orange:\n"
"\t\t same as HTML colors)\n"
" -text\tprompt interactively for text info (tEXt chunks)\n"
" -time\tinclude a tIME chunk (last modification time)\n"
@@ -419,7 +431,7 @@ int main(int argc, char **argv)
wpng_info.have_text &= ~TEXT_TITLE;
valid = FALSE;
#else
if (p[result] == 27) { /* escape character */
if (p[result] == 27) { /* escape character */
wpng_info.have_text &= ~TEXT_TITLE;
valid = FALSE;
}
@@ -449,7 +461,7 @@ int main(int argc, char **argv)
wpng_info.have_text &= ~TEXT_AUTHOR;
valid = FALSE;
#else
if (p[result] == 27) { /* escape character */
if (p[result] == 27) { /* escape character */
wpng_info.have_text &= ~TEXT_AUTHOR;
valid = FALSE;
}
@@ -489,7 +501,7 @@ int main(int argc, char **argv)
wpng_info.have_text &= ~TEXT_DESC;
valid = FALSE;
#else
if (p[result] == 27) { /* escape character */
if (p[result] == 27) { /* escape character */
wpng_info.have_text &= ~TEXT_DESC;
valid = FALSE;
}
@@ -519,7 +531,7 @@ int main(int argc, char **argv)
wpng_info.have_text &= ~TEXT_COPY;
valid = FALSE;
#else
if (p[result] == 27) { /* escape character */
if (p[result] == 27) { /* escape character */
wpng_info.have_text &= ~TEXT_COPY;
valid = FALSE;
}
@@ -549,7 +561,7 @@ int main(int argc, char **argv)
wpng_info.have_text &= ~TEXT_EMAIL;
valid = FALSE;
#else
if (p[result] == 27) { /* escape character */
if (p[result] == 27) { /* escape character */
wpng_info.have_text &= ~TEXT_EMAIL;
valid = FALSE;
}
@@ -579,7 +591,7 @@ int main(int argc, char **argv)
wpng_info.have_text &= ~TEXT_URL;
valid = FALSE;
#else
if (p[result] == 27) { /* escape character */
if (p[result] == 27) { /* escape character */
wpng_info.have_text &= ~TEXT_URL;
valid = FALSE;
}
@@ -755,7 +767,7 @@ static int wpng_isvalid_latin1(uch *p, int len)
static void wpng_cleanup()
static void wpng_cleanup(void)
{
if (wpng_info.outfile) {
fclose(wpng_info.outfile);
@@ -791,11 +803,11 @@ static char *dos_kbd_gets(char *buf, int len)
buf[count++] = ch = getche();
} while (ch != '\r' && count < len-1);
buf[count--] = '\0'; /* terminate string */
if (buf[count] == '\r') /* Enter key makes CR, so change to newline */
buf[count--] = '\0'; /* terminate string */
if (buf[count] == '\r') /* Enter key makes CR, so change to newline */
buf[count] = '\n';
fprintf(stderr, "\n"); /* Enter key does *not* cause a newline */
fprintf(stderr, "\n"); /* Enter key does *not* cause a newline */
fflush(stderr);
return buf;