Modified builtin_set.cpp to use env_get(), added functions like update_values2(), env_set2() etc. to support wcstring and vector instead of using array_list_t

This commit is contained in:
Siteshwar Vashisht 2012-01-10 01:19:37 +05:30
parent feed900f3d
commit 7b3377e78c

View file

@ -12,7 +12,8 @@ Functions used for implementing the set builtin.
#include <sys/types.h>
#include <termios.h>
#include <signal.h>
#include <vector>
#include <algorithm>
#include "fallback.h"
#include "util.h"
@ -72,7 +73,7 @@ static int my_env_set( const wchar_t *key, array_list_t *val, int scope )
int show_hint = 0;
struct stat buff;
wchar_t *dir = (wchar_t *)al_get( val, i );
const wchar_t *dir = (wchar_t *)al_get( val, i );
if( wstat( dir, &buff ) )
{
@ -88,7 +89,7 @@ static int my_env_set( const wchar_t *key, array_list_t *val, int scope )
if( error )
{
wchar_t *colon;
const wchar_t *colon;
sb_printf( sb_err,
_(BUILTIN_SET_PATH_ERROR),
@ -173,6 +174,126 @@ static int my_env_set( const wchar_t *key, array_list_t *val, int scope )
return retcode;
}
static int my_env_set2( const wchar_t *key, wcstring_list_t &val, int scope )
{
string_buffer_t sb;
int i;
int retcode = 0;
wchar_t *val_str=0;
if( is_path_variable( key ) )
{
int error = 0;
for( i=0; i< val.size() ; i++ )
{
int show_perror = 0;
int show_hint = 0;
struct stat buff;
const wchar_t *dir = val[ i ].c_str();
if( wstat( dir, &buff ) )
{
error = 1;
show_perror = 1;
}
if( !( S_ISDIR(buff.st_mode) ) )
{
error = 1;
}
if( error )
{
const wchar_t *colon;
sb_printf( sb_err,
_(BUILTIN_SET_PATH_ERROR),
L"set",
dir,
key );
colon = wcschr( dir, L':' );
if( colon && *(colon+1) )
{
show_hint = 1;
}
}
if( show_perror )
{
builtin_wperror( L"set" );
}
if( show_hint )
{
sb_printf( sb_err,
_(BUILTIN_SET_PATH_HINT),
L"set",
key,
key,
wcschr( dir, L':' )+1);
}
if( error )
{
break;
}
}
if( error )
{
return 1;
}
}
sb_init( &sb );
if( val.size() )
{
for( i=0; i< val.size() ; i++ )
{
const wchar_t *next = val[ i ].c_str();
sb_append( &sb, next?next:L"" );
if( i<val.size() - 1 )
{
sb_append( &sb, ARRAY_SEP_STR );
}
}
val_str = (wchar_t *)sb.buff;
}
switch( env_set( key, val_str, scope | ENV_USER ) )
{
case ENV_PERM:
{
sb_printf( sb_err, _(L"%ls: Tried to change the read-only variable '%ls'\n"), L"set", key );
retcode=1;
break;
}
case ENV_INVALID:
{
sb_printf( sb_err, _(L"%ls: Unknown error"), L"set" );
retcode=1;
break;
}
}
sb_destroy( &sb );
return retcode;
}
/**
Extract indexes from a destination argument of the form name[index1 index2...]
@ -260,6 +381,82 @@ static int parse_index( array_list_t *indexes,
}
static int parse_index2( std::vector<long> &indexes,
const wchar_t *src,
const wchar_t *name,
int var_count )
{
size_t len;
int count = 0;
const wchar_t *src_orig = src;
if (src == 0)
{
return 0;
}
while (*src != L'\0' && (iswalnum(*src) || *src == L'_'))
{
src++;
}
if (*src != L'[')
{
sb_printf( sb_err, _(BUILTIN_SET_ARG_COUNT), L"set" );
return 0;
}
len = src-src_orig;
if( (wcsncmp( src_orig, name, len )!=0) || (wcslen(name) != (len)) )
{
sb_printf( sb_err,
_(L"%ls: Multiple variable names specified in single call (%ls and %.*ls)\n"),
L"set",
name,
len,
src_orig);
return 0;
}
src++;
while (iswspace(*src))
{
src++;
}
while (*src != L']')
{
wchar_t *end;
long l_ind;
errno = 0;
l_ind = wcstol(src, &end, 10);
if( end==src || errno )
{
sb_printf(sb_err, _(L"%ls: Invalid index starting at '%ls'\n"), L"set", src);
return 0;
}
if( l_ind < 0 )
{
l_ind = var_count+l_ind+1;
}
indexes.push_back( l_ind );
src = end;
count++;
while (iswspace(*src)) src++;
}
return count;
}
/**
Update a list \c list by writing copies (using wcsdup) of the
values specified by \c values to the indexes specified by \c
@ -295,7 +492,32 @@ static int update_values( array_list_t *list,
return 0;
}
static int update_values2( wcstring_list_t &list,
std::vector<long> &indexes,
wcstring_list_t &values )
{
int i;
/* Replace values where needed */
for( i = 0; i < indexes.size(); i++ )
{
/*
The '- 1' below is because the indices in fish are
one-based, but the array_list_t uses zero-based indices
*/
long ind = indexes[i] - 1;
const wcstring newv = values[ i ];
if( ind < 0 )
{
return 1;
}
// free((void *) al_get(list, ind));
list[ ind ] = newv;
}
return 0;
}
/**
Return 1 if an array list of longs contains the specified
value, 0 otherwise
@ -345,6 +567,35 @@ static void erase_values(array_list_t *list, array_list_t *indexes)
al_destroy(&result);
}
/**
Erase from a list of wcstring values at specified indexes
*/
static void erase_values2 (wcstring_list_t &list, std::vector<long> &indexes)
{
long i;
wcstring_list_t result;
// al_init(&result);
for (i = 0; i < list.size(); i++)
{
if (std::find(indexes.begin(), indexes.end(), i + 1) != indexes.end())
{
result.push_back( list[ i ] );
}
else
{
// free( (void *)al_get(list, i));
}
}
// al_truncate(list,0);
list.clear();
copy(result.begin(),result.end(),back_inserter( list ) );
// al_destroy(&result);
}
/**
Print the names of all environment variables in the scope, with or without values,
@ -369,23 +620,23 @@ static void print_variables(int include_values, int esc, int scope)
if( include_values )
{
wchar_t *value = env_get(key);
wcstring value = env_get_string(key);
wchar_t *e_value;
if( value )
if( !value.empty() )
{
int shorten = 0;
if( wcslen( value ) > 64 )
if( value.length() > 64 )
{
shorten = 1;
value = wcsndup( value, 60 );
if( !value )
value = wcsndup( value.c_str(), 60 );
if( value.empty() )
{
DIE_MEM();
}
}
e_value = esc ? expand_escape_variable(value) : wcsdup(value);
e_value = esc ? expand_escape_variable(value.c_str()) : wcsdup(value.c_str());
sb_append(sb_out, L" ", e_value, NULL);
free(e_value);
@ -393,7 +644,7 @@ static void print_variables(int include_values, int esc, int scope)
if( shorten )
{
sb_append(sb_out, L"\u2026");
free( value );
// free( value );
}
}
@ -632,25 +883,25 @@ static int builtin_set( wchar_t **argv )
if( slice )
{
array_list_t indexes;
array_list_t result;
std::vector<long> indexes;
wcstring_list_t result;
int j;
al_init( &result );
al_init( &indexes );
// al_init( &result );
// al_init( &indexes );
tokenize_variable_array( env_get( dest ), &result );
tokenize_variable_array2( env_get_string( dest ), result );
if( !parse_index( &indexes, arg, dest, al_get_count( &result ) ) )
if( !parse_index2( indexes, arg, dest, result.size() ) )
{
builtin_print_help( argv[0], sb_err );
retcode = 1;
break;
}
for( j=0; j<al_get_count( &indexes ); j++ )
for( j=0; j < indexes.size() ; j++ )
{
long idx = al_get_long( &indexes, j );
if( idx < 1 || idx > al_get_count( &result ) )
long idx = indexes[j];
if( idx < 1 || idx > result.size() )
{
retcode++;
}
@ -747,19 +998,19 @@ static int builtin_set( wchar_t **argv )
Slice mode
*/
int idx_count, val_count;
array_list_t values;
array_list_t indexes;
array_list_t result;
wcstring_list_t values;
std::vector<long> indexes;
wcstring_list_t result;
al_init(&values);
al_init(&indexes);
al_init(&result);
// al_init(&values);
// al_init(&indexes);
// al_init(&result);
tokenize_variable_array( env_get(dest), &result );
tokenize_variable_array2( env_get_string(dest), result );
for( ; woptind<argc; woptind++ )
{
if( !parse_index( &indexes, argv[woptind], dest, al_get_count( &result ) ) )
if( !parse_index2( indexes, argv[woptind], dest, result.size() ) )
{
builtin_print_help( argv[0], sb_err );
retcode = 1;
@ -767,7 +1018,7 @@ static int builtin_set( wchar_t **argv )
}
val_count = argc-woptind-1;
idx_count = al_get_count( &indexes );
idx_count = indexes.size();
if( !erase )
{
@ -794,42 +1045,42 @@ static int builtin_set( wchar_t **argv )
if( erase )
{
erase_values(&result, &indexes);
my_env_set( dest, &result, scope);
erase_values2(result, indexes);
my_env_set2( dest, result, scope);
}
else
{
array_list_t value;
al_init(&value);
wcstring_list_t value;
// al_init(&value);
while( woptind < argc )
{
al_push(&value, argv[woptind++]);
value.push_back( argv[woptind++] );
}
if( update_values( &result,
&indexes,
&value ) )
if( update_values2( result,
indexes,
value ) )
{
sb_printf( sb_err, L"%ls: ", argv[0] );
sb_printf( sb_err, ARRAY_BOUNDS_ERR );
sb_append( sb_err, L"\n" );
}
my_env_set(dest,
&result,
my_env_set2(dest,
result,
scope);
al_destroy( &value );
// al_destroy( &value );
}
}
al_foreach( &result, &free );
al_destroy( &result );
// al_foreach( &result, &free );
// al_destroy( &result );
al_destroy(&indexes);
al_destroy(&values);
// al_destroy(&indexes);
// al_destroy(&values);
}
else