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/*
* Set environment variables
*
*/
#include "../config.h"
#include <assert.h>
#include <stdlib.h>
#include <string.h>
#include <environ.h>
#include "../include/cmdline.h"
#include "../include/command.h"
#include "../include/context.h"
#include "../include/misc.h"
#include "../err_fcts.h"
#include "../strings.h"
#define promptBuffer 256
static int optC, promptUser;
#pragma argsused
optScanFct(opt_set)
{ switch(ch) {
/* case 'A': return optScanBool(optA); arithmetic expression */
case 'C': return optScanBool(optC);
#if 1
case 'I': /* Display Information about current memory */
printf("Size of environment segment: %u bytes; unused: %u\n"
, env_resize(0, 0), env_freeCount(env_glbSeg));
return E_Other;
#endif
case 'P': return optScanBool(promptUser);
}
optErr();
return E_Useage;
}
int cmd_set(char *param)
{ char *value;
char *promptBuf = 0;
int ret;
optC = promptUser = 0;
if(leadOptions(¶m, opt_set, 0) != E_None)
return 1;
switch(breakVarAssign(ctxtEnvironment, param, &value)) {
case 1: /* no equal sign */
error_syntax(0);
return 1;
case 0: /* displayed */
return 0;
#ifdef DEBUG
case 2: break;
default:
dprintf(("[SET: Invalid response from breakVarAssign()]\n"));
return 1;
#endif
}
if(promptUser) { /* -> Display the value, then read and assign */
assert(value);
fputs(value, stdout);
promptBuf = malloc(promptBuffer);
if(!promptBuf) {
error_out_of_memory();
return E_NoMem;
}
fgets(promptBuf, promptBuffer, stdin);
if(cbreak) {
free(promptBuf);
return E_CBreak;
}
value = strchr(promptBuf, '\0');
while(--value >= promptBuf && (*value == '\n' || *value == '\r'));
value[1] = '\0'; /* strip trailing newlines */
value = promptBuf;
}
/* If the value is just blanks, it means to delete the value;
but otherwise even leading and trailing spaces must be kept */
if(is_empty(value))
value = 0;
ret = chgEnvCase(optC, param, value);
free(promptBuf);
return ret;
}
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