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Add export builtin to sh(1).

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This commit is contained in:
Jonas 'Sortie' Termansen 2015-12-28 20:55:57 +01:00
parent 0c7d1fe2c1
commit 0c5eff4475
1 changed files with 56 additions and 0 deletions
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56
sh/sh.cpp
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@ -1133,6 +1133,62 @@ struct execute_result execute(const char* const* tokens,
do_exit = true;
internal_status = exitcode;
}
else if ( strcmp(argv[0], "export") == 0 )
{
internal = true;
internal_status = 0;
if ( argv[1] )
{
size_t eqpos = strcspn(argv[1], "=");
if ( argv[1][eqpos] == '=' )
{
char* name = strndup(argv[1], eqpos);
if ( name )
{
if ( setenv(name, argv[1] + eqpos + 1, 1) < 0 )
{
error(0, errno, "export: setenv");
internal_status = 1;
}
}
else
{
error(0, errno, "export: malloc");
internal_status = 1;
}
}
}
else
{
for ( size_t i = 0; environ[i]; i++ )
{
const char* envvar = environ[i];
printf("export ");
while ( *envvar && *envvar != '=' )
putchar((unsigned char) *envvar++);
if ( *envvar == '=' )
putchar((unsigned char) *envvar++);
putchar('\'');
while ( *envvar )
{
if ( *envvar == '\'' )
{
putchar('\'');
putchar('\\');
putchar((unsigned char) *envvar++);
putchar('\'');
}
else
{
putchar((unsigned char) *envvar++);
}
}
putchar('\'');
putchar('\n');
}
}
}
else if ( strcmp(argv[0], "unset") == 0 )
{
internal = true;