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Atari Mega Archive 1
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GEMC15.C
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C/C++ Source or Header
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1987-10-05
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3KB
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166 lines
/*------------------------------*/
/* includes */
/*------------------------------*/
#include "portab.h" /* portable coding conv */
#include "machine.h" /* machine depndnt conv */
#include "osbind.h" /* BDOS defintions */
#include "gemdefs.h"
/*------------------------------*/
/* open_file */
/*------------------------------*/
WORD
open_file(file_name)
BYTE *file_name;
{
LONG dos_hndl;
FOREVER
{
dos_hndl = Fopen(file_name, 0);
if (dos_hndl >= 0)
return ((WORD) dos_hndl);
if ( !dos_error((WORD) dos_hndl) )
return (-1);
}
return (-1); /* Appease lint */
}
/*------------------------------*/
/* create_file */
/*------------------------------*/
WORD
create_file(file_name)
BYTE *file_name;
{
LONG dos_hndl;
FOREVER
{
dos_hndl = Fcreate(file_name, 0);
if (dos_hndl >= 0)
return ((WORD) dos_hndl);
if ( !dos_error((WORD) dos_hndl) )
return (-1);
}
return (-1); /* Appease lint */
}
/*------------------------------*/
/* dos_error */
/*------------------------------*/
WORD
dos_error(tos_err)
WORD tos_err;
{
WORD f_ret;
graf_mouse(ARROW, 0x0L);
if (tos_err > -50)
{
tos_err += 31;
tos_err = -tos_err;
}
f_ret = form_error(tos_err);
return (f_ret);
}
/*------------------------------*/
/* get_file */
/*------------------------------*/
WORD
get_file(extnt, got_file)
BYTE *extnt, *got_file;
{
WORD butn, ii;
BYTE tmp_path[64], tmp_name[13];
tmp_name[0] = '\0';
tmp_path[0] = '\0';
if (*got_file)
parse_fname(got_file, tmp_path, tmp_name, extnt);
if (!tmp_path[0])
get_path(&tmp_path[0], extnt);
fsel_input(tmp_path, tmp_name, &butn);
if (butn)
{
strcpy(got_file, tmp_path);
for (ii = 0; got_file[ii] && got_file[ii] != '*'; ii++);
got_file[ii - 1] = '\0';
strcat (got_file, "\\");
strcat(got_file, tmp_name);
return (TRUE);
}
else
return (FALSE);
}
/*------------------------------*/
/* parse_fname */
/*------------------------------*/
VOID
parse_fname(full, path, name, extnt)
BYTE *full, *path, *name, *extnt;
{
WORD i, j;
BYTE *s, *d;
for (i = strlen(full); i--; ) /* scan for end of path */
if (full[i] == '\\' || full[i] == ':')
break;
if (i == -1)
strcpy(name, full); /* "Naked" file name */
else
{
strcpy(name, &full[i+1]);
for (s = full, d = path, j = 0; j++ < i + 1;
*d++ = *s++);
strcpy(&path[i+1], "*.");
strcat(path, extnt);
}
}
/*------------------------------*/
/* get_path */
/*------------------------------*/
VOID
get_path(tmp_path, spec)
BYTE *tmp_path, *spec;
{
WORD cur_drv;
cur_drv = Dgetdrv();
tmp_path[0] = cur_drv + 'A';
tmp_path[1] = ':';
Dgetpath(&tmp_path[2], 0);
if (strlen(tmp_path) > 3)
strcat(tmp_path, "\\");
else
tmp_path[2] = '\0';
strcat(tmp_path, "*.");
strcat(tmp_path, spec);
}
/*------------------------------*/
/* new_ext */
/*------------------------------*/
VOID
new_ext(o_fname, n_fname, ext)
BYTE *o_fname, *n_fname, *ext;
{
WORD ii, jj;
strcpy(n_fname, o_fname);
for (ii = (jj = strlen(n_fname)) - 1; ii && n_fname[ii] != '.'; ii--);
if (!ii)
n_fname[ii = jj] = '.';
strcpy(&n_fname[++ii], ext);
}