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Initial 'config_curses.c' to allow one to reset DLL, chtype size, 8-b…
…it/UTF-8/wide-character, and other settings. See issue #133 and the discussion starting at 'a bit of code to configure/reconfigure'.
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#include <stdio.h> | ||
#include <string.h> | ||
#include <stdbool.h> | ||
#include <assert.h> | ||
#ifdef _WIN32 | ||
#include <direct.h> | ||
#else | ||
#include <unistd.h> | ||
#endif | ||
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/* Code to 'configure' curses.h. Run as, e.g., | ||
./config_curses -DPDC_WIDE -DXCURSES | ||
it will check to see if the existing curses.h has those options set | ||
(and not the others, such as CHTYPE_32). Essentially, it just checks | ||
to see if the existing configuration matches the one described on the | ||
command line. | ||
If it matches, we exit without doing anything. No file is updated. | ||
If the configurations differ, a new 'curses0.h' is created that | ||
has the options given on the command line. This is done by reading in | ||
the existing 'curses.h', snipping out the lines with config data, | ||
and inserting new ones. When we're done, we remove 'curses.h' and | ||
move our new 'curses0.h' into its place. This will force a full | ||
recompile on the next build, which is what we want anyway if | ||
the configuration has changed. */ | ||
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int main( const int argc, const char **argv) | ||
{ | ||
FILE *ifile, *ofile; | ||
int options_found = 0, i, j, options_desired = 0; | ||
int verbose = 0; | ||
const char *option_text[] = { | ||
"XCURSES", "PDC_RGB", "PDC_WIDE", | ||
"PDC_FORCE_UTF8", "PDC_DLL_BUILD", "PDC_NCMOUSE", | ||
"CHTYPE_32" }; | ||
const int n_options = (int)( sizeof( option_text) / sizeof( option_text[0])); | ||
char buff[300]; | ||
const char *curses_h_filename = "curses.h"; | ||
const char *curses0_h_filename = "curses0.h"; | ||
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for( i = 1; i < argc; i++) | ||
if( argv[i][0] == '-') | ||
switch( argv[i][1]) | ||
{ | ||
case 'd': | ||
{ | ||
int err_code; | ||
const char *arg = (!argv[i][2] && i < argc - 1 ? | ||
argv[i + 1] : argv[i] + 2); | ||
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#ifdef _WIN32 | ||
err_code = _chdir( arg); | ||
#else | ||
err_code = chdir( arg); | ||
#endif | ||
if( err_code) | ||
{ | ||
fprintf( stderr, "Couldn't change dir to '%s'\n", arg); | ||
perror( NULL); | ||
return( -1); | ||
} | ||
} | ||
break; | ||
case 'v': | ||
verbose = 1; | ||
break; | ||
case 'D': | ||
for( j = 0; j < n_options; j++) | ||
if( !strcmp( argv[i] + 2, option_text[j])) | ||
options_desired |= (1 << j); | ||
break; | ||
default: | ||
printf( "Option '%s' not recognized\n", argv[i]); | ||
} | ||
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ifile = fopen( curses_h_filename, "rb"); | ||
assert( ifile); | ||
while( fgets( buff, sizeof( buff), ifile)) | ||
if( !memcmp( buff, " #define ", 11)) | ||
for( j = 0; j < n_options; j++) | ||
if( !memcmp( buff + 11, option_text[j], strlen( option_text[j])) | ||
&& buff[11 + strlen( option_text[j])] <= ' ') | ||
options_found |= (1 << j); | ||
if( verbose) | ||
printf( "options_found = 0x%x options_desired = 0x%x\n", | ||
options_found, options_desired); | ||
if( options_found == options_desired) | ||
{ | ||
fclose( ifile); /* nothing to do */ | ||
return( 0); | ||
} | ||
fseek( ifile, 0L, SEEK_SET); | ||
ofile = fopen( curses0_h_filename, "wb"); | ||
assert( ofile); | ||
while( fgets( buff, sizeof( buff), ifile)) | ||
{ | ||
fputs( buff, ofile); | ||
if( !memcmp( buff, "**man-end*******", 16)) | ||
{ | ||
fputs( "\n", ofile); | ||
for( i = 0; i < n_options; i++) | ||
if( options_desired & (1 << i)) | ||
{ | ||
if( !strcmp( option_text[i], "PDC_DLL_BUILD")) | ||
fprintf( ofile, "#if defined( __WIN32) && !defined( PDC_DLL_BUILD)\n"); | ||
else | ||
fprintf( ofile, "#ifndef %s\n", option_text[i]); | ||
fprintf( ofile, " #define %s\n", option_text[i]); | ||
fprintf( ofile, "#endif\n"); | ||
} | ||
fputs( "\n", ofile); | ||
while( fgets( buff, sizeof( buff), ifile) | ||
&& memcmp( buff, "#define PDCURSES", 16)) | ||
; | ||
fputs( buff, ofile); /* dump rest of file unaltered*/ | ||
while( fgets( buff, sizeof( buff), ifile)) | ||
fputs( buff, ofile); | ||
} | ||
} | ||
fclose( ofile); | ||
fclose( ifile); | ||
#ifdef _WIN32 | ||
_unlink( curses_h_filename); | ||
#else | ||
unlink( curses_h_filename); | ||
#endif | ||
rename( curses0_h_filename, curses_h_filename); | ||
if( verbose) | ||
printf( "curses.h updated\n"); | ||
return( 0); | ||
} |