picrin/string.c

364 lines
7.9 KiB
C
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/**
* See Copyright Notice in picrin.h
*/
#include <string.h>
#include "picrin.h"
#include "picrin/string.h"
#include "picrin/pair.h"
#include "picrin/port.h"
static pic_str *
str_new_rope(pic_state *pic, xrope *rope)
{
pic_str *str;
str = (pic_str *)pic_obj_alloc(pic, sizeof(pic_str), PIC_TT_STRING);
str->rope = rope; /* delegate ownership */
return str;
}
pic_str *
pic_str_new(pic_state *pic, const char *imbed, size_t len)
{
if (imbed == NULL && len > 0) {
pic_errorf(pic, "zero length specified against NULL ptr");
}
return str_new_rope(pic, xr_new_copy(imbed, len));
}
pic_str *
pic_str_new_cstr(pic_state *pic, const char *cstr)
{
return pic_str_new(pic, cstr, strlen(cstr));
}
size_t
pic_strlen(pic_str *str)
{
return xr_len(str->rope);
}
char
pic_str_ref(pic_state *pic, pic_str *str, size_t i)
{
int c;
c = xr_at(str->rope, i);
if (c == -1) {
pic_errorf(pic, "index out of range %d", i);
}
return (char)c;
}
static xrope *
xr_put(xrope *rope, size_t i, char c)
{
xrope *x, *y, *z;
char buf[2];
if (xr_len(rope) <= i) {
return NULL;
}
buf[0] = c;
buf[1] = '\0';
x = xr_sub(rope, 0, i);
y = xr_new_copy(buf, 1);
z = xr_cat(x, y);
XROPE_DECREF(x);
XROPE_DECREF(y);
x = z;
y = xr_sub(rope, i + 1, xr_len(rope));
z = xr_cat(z, y);
XROPE_DECREF(x);
XROPE_DECREF(y);
return z;
}
void
pic_str_set(pic_state *pic, pic_str *str, size_t i, char c)
{
xrope *x;
x = xr_put(str->rope, i, c);
if (x == NULL) {
pic_errorf(pic, "index out of range %d", i);
}
XROPE_DECREF(str->rope);
str->rope = x;
}
pic_str *
pic_strcat(pic_state *pic, pic_str *a, pic_str *b)
{
return str_new_rope(pic, xr_cat(a->rope, b->rope));
}
pic_str *
pic_substr(pic_state *pic, pic_str *str, size_t s, size_t e)
{
return str_new_rope(pic, xr_sub(str->rope, s, e));
}
int
pic_strcmp(pic_str *str1, pic_str *str2)
{
return strcmp(xr_cstr(str1->rope), xr_cstr(str2->rope));
}
const char *
pic_str_cstr(pic_str *str)
{
return xr_cstr(str->rope);
}
pic_value
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pic_xvfformat(pic_state *pic, xFILE *file, const char *fmt, va_list ap)
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{
char c;
pic_value irrs = pic_nil_value();
while ((c = *fmt++)) {
switch (c) {
default:
xfputc(c, file);
break;
case '%':
c = *fmt++;
if (! c)
goto exit;
switch (c) {
default:
xfputc(c, file);
break;
case '%':
xfputc('%', file);
break;
case 'c':
xfprintf(file, "%c", va_arg(ap, int));
break;
case 's':
xfprintf(file, "%s", va_arg(ap, const char *));
break;
case 'd':
xfprintf(file, "%d", va_arg(ap, int));
break;
case 'p':
xfprintf(file, "%p", va_arg(ap, void *));
break;
case 'f':
xfprintf(file, "%f", va_arg(ap, double));
break;
}
break;
case '~':
c = *fmt++;
if (! c)
goto exit;
switch (c) {
default:
xfputc(c, file);
break;
case '~':
xfputc('~', file);
break;
case '%':
xfputc('\n', file);
break;
case 'a':
irrs = pic_cons(pic, pic_fdisplay(pic, va_arg(ap, pic_value), file), irrs);
break;
case 's':
irrs = pic_cons(pic, pic_fwrite(pic, va_arg(ap, pic_value), file), irrs);
break;
}
break;
}
}
exit:
return pic_reverse(pic, irrs);
}
pic_value
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pic_xvformat(pic_state *pic, const char *fmt, va_list ap)
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{
struct pic_port *port;
pic_value irrs;
port = pic_open_output_string(pic);
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irrs = pic_xvfformat(pic, port->file, fmt, ap);
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irrs = pic_cons(pic, pic_obj_value(pic_get_output_string(pic, port)), irrs);
pic_close_port(pic, port);
return irrs;
}
pic_value
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pic_xformat(pic_state *pic, const char *fmt, ...)
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{
va_list ap;
pic_value objs;
va_start(ap, fmt);
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objs = pic_xvformat(pic, fmt, ap);
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va_end(ap);
return objs;
}
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void
pic_vfformat(pic_state *pic, xFILE *file, const char *fmt, va_list ap)
{
pic_xvfformat(pic, file, fmt, ap);
}
pic_str *
pic_vformat(pic_state *pic, const char *fmt, va_list ap)
{
struct pic_port *port;
pic_str *str;
port = pic_open_output_string(pic);
pic_vfformat(pic, port->file, fmt, ap);
str = pic_get_output_string(pic, port);
pic_close_port(pic, port);
return str;
}
pic_str *
pic_format(pic_state *pic, const char *fmt, ...)
{
va_list ap;
pic_str *str;
va_start(ap, fmt);
str = pic_vformat(pic, fmt, ap);
va_end(ap);
return str;
}
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static pic_value
pic_str_string_p(pic_state *pic)
{
pic_value v;
pic_get_args(pic, "o", &v);
return pic_bool_value(pic_str_p(v));
}
static pic_value
pic_str_string_length(pic_state *pic)
{
pic_str *str;
pic_get_args(pic, "s", &str);
return pic_int_value(pic_strlen(str));
}
static pic_value
pic_str_string_ref(pic_state *pic)
{
pic_str *str;
int k;
pic_get_args(pic, "si", &str, &k);
return pic_char_value(pic_str_ref(pic, str, k));
}
#define DEFINE_STRING_CMP(name, op) \
static pic_value \
pic_str_string_##name(pic_state *pic) \
{ \
size_t argc; \
pic_value *argv; \
size_t i; \
\
pic_get_args(pic, "*", &argc, &argv); \
\
if (argc < 1 || ! pic_str_p(argv[0])) { \
return pic_false_value(); \
} \
\
for (i = 1; i < argc; ++i) { \
if (! pic_str_p(argv[i])) { \
return pic_false_value(); \
} \
if (! (pic_strcmp(pic_str_ptr(argv[i-1]), pic_str_ptr(argv[i])) op 0)) { \
return pic_false_value(); \
} \
} \
return pic_true_value(); \
}
DEFINE_STRING_CMP(eq, ==)
DEFINE_STRING_CMP(lt, <)
DEFINE_STRING_CMP(gt, >)
DEFINE_STRING_CMP(le, <=)
DEFINE_STRING_CMP(ge, >=)
static pic_value
pic_str_string_copy(pic_state *pic)
{
pic_str *str;
int n, start, end;
n = pic_get_args(pic, "s|ii", &str, &start, &end);
switch (n) {
case 1:
start = 0;
case 2:
end = pic_strlen(str);
}
return pic_obj_value(pic_substr(pic, str, start, end));
}
static pic_value
pic_str_string_append(pic_state *pic)
{
size_t argc, i;
pic_value *argv;
pic_str *str;
pic_get_args(pic, "*", &argc, &argv);
str = pic_str_new(pic, NULL, 0);
for (i = 0; i < argc; ++i) {
if (! pic_str_p(argv[i])) {
pic_error(pic, "type error");
}
str = pic_strcat(pic, str, pic_str_ptr(argv[i]));
}
return pic_obj_value(str);
}
void
pic_init_str(pic_state *pic)
{
pic_defun(pic, "string?", pic_str_string_p);
pic_defun(pic, "string-length", pic_str_string_length);
pic_defun(pic, "string-ref", pic_str_string_ref);
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pic_defun(pic, "string-copy", pic_str_string_copy);
pic_defun(pic, "string-append", pic_str_string_append);
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pic_defun(pic, "string=?", pic_str_string_eq);
pic_defun(pic, "string<?", pic_str_string_lt);
pic_defun(pic, "string>?", pic_str_string_gt);
pic_defun(pic, "string<=?", pic_str_string_le);
pic_defun(pic, "string>=?", pic_str_string_ge);
}