/* $Id: backend.c,v 1.10 2002/12/24 17:20:46 ukai Exp $ */
#include <stdio.h>
#include <string.h>
#include <sys/types.h>
#include "fm.h"
#include "gc.h"
#include "terms.h"
/* Prototype declaration of internal functions */
#ifdef HAVE_READLINE
#include <readline/readline.h>
#else /* ! HAVE_READLINE */
static char *readline(char *);
#endif /* ! HAVE_READLINE */
static TextList *split(char *);
/* Prototype declaration of command functions */
static void get(TextList *);
static void post(TextList *);
static void set(TextList *);
static void show(TextList *);
static void quit(TextList *);
static void help(TextList *);
/* *INDENT-OFF* */
/* Table of command functions */
struct {
const char *name;
const char *option_string;
const char *help;
void (*func)(TextList*);
} command_table[] = {
{"get", "[-download_only] URL", "Retrieve URL.", get},
{"post", "[-download_only] [-target TARGET] [-charset CHARSET]"
" [-enctype ENCTYPE] [-body BODY] [-boundary BOUNDARY] [-length LEN] URL",
"Retrieve URL.", post},
{"set", "VARIABLE VALUE", "Set VALUE to VARIABLE.", set},
{"show", "VARIABLE", "Show value of VARIABLE.", show},
{"quit", "", "Quit program.", quit},
{"help", "", "Display help messages.", help},
{NULL, NULL, NULL, NULL},
};
/* *INDENT-ON* */
/* Prototype declaration of functions to manipulate configuration variables */
static void set_column(TextList *);
static void show_column(TextList *);
/* *INDENT-OFF* */
/* Table of configuration variables */
struct {
const char *name;
void (*set_func)(TextList*);
void (*show_func)(TextList*);
} variable_table[] = {
{"column", set_column, show_column},
{NULL, NULL, NULL},
};
/* *INDENT-ON* */
#ifdef JP_CHARSET
static char *
get_mime_charset_name(int coding)
{
Str r;
switch (coding) {
case CODE_EUC:
r = Strnew_charp("euc-japan");
break;
case CODE_SJIS:
r = Strnew_charp("shift_jis");
break;
case CODE_JIS_m:
case CODE_JIS_n:
case CODE_JIS_N:
case CODE_JIS_j:
case CODE_JIS_J:
r = Strnew_charp("iso-2022-jp");
break;
default:
return NULL;
}
return r->ptr;
}
#endif
static void
print_headers(Buffer *buf, int len)
{
TextListItem *tp;
if (buf->document_header) {
for (tp = buf->document_header->first; tp; tp = tp->next)
printf("%s\n", tp->ptr);
}
printf("w3m-current-url: %s\n", parsedURL2Str(&buf->currentURL)->ptr);
if (buf->baseURL)
printf("w3m-base-url: %s\n", parsedURL2Str(buf->baseURL)->ptr);
printf("w3m-content-type: %s\n", buf->type);
#ifdef JP_CHARSET
if (buf->document_code)
printf("w3m-content-charset: %s\n",
get_mime_charset_name(buf->document_code));
#endif
if (len > 0)
printf("w3m-content-length: %d\n", len);
}
static void
internal_get(char *url, int flag, FormList *request)
{
Buffer *buf;
backend_halfdump_buf = NULL;
do_download = flag;
buf = loadGeneralFile(url, NULL, NO_REFERER, 0, request);
do_download = FALSE;
if (buf != NULL && buf != NO_BUFFER) {
if (!strcasecmp(buf->type, "text/html") && backend_halfdump_buf) {
TextLineListItem *p;
Str first, last;
int len = 0;
for (p = backend_halfdump_buf->first; p; p = p->next)
len += p->ptr->line->length + 1;
first = Strnew_charp("<pre>\n");
last = Strnew_m_charp("</pre><title>", html_quote(buf->buffername),
"</title>\n", NULL);
print_headers(buf, len + first->length + last->length);
printf("\n");
printf("%s", first->ptr);
for (p = backend_halfdump_buf->first; p; p = p->next)
printf("%s\n", p->ptr->line->ptr);
printf("%s", last->ptr);
}
else {
if (!strcasecmp(buf->type, "text/plain")) {
Line *lp;
int len = 0;
for (lp = buf->firstLine; lp; lp = lp->next) {
len += lp->len;
if (lp->lineBuf[lp->len - 1] != '\n')
len++;
}
print_headers(buf, len);
printf("\n");
saveBuffer(buf, stdout);
}
else {
print_headers(buf, 0);
}
}
}
}
/* Command: get */
static void
get(TextList *argv)
{
char *p, *url = NULL;
int flag = FALSE;
while ((p = popText(argv))) {
if (!strcasecmp(p, "-download_only"))
flag = TRUE;
else
url = p;
}
if (url) {
internal_get(url, flag, NULL);
}
}
/* Command: post */
static void
post(TextList *argv)
{
FormList *request;
char *p, *target = NULL, *charset = NULL,
*enctype = NULL, *body = NULL, *boundary = NULL, *url = NULL;
int flag = FALSE, length = 0;
while ((p = popText(argv))) {
if (!strcasecmp(p, "-download_only"))
flag = TRUE;
else if (!strcasecmp(p, "-target"))
target = popText(argv);
else if (!strcasecmp(p, "-charset"))
charset = popText(argv);
else if (!strcasecmp(p, "-enctype"))
enctype = popText(argv);
else if (!strcasecmp(p, "-body"))
body = popText(argv);
else if (!strcasecmp(p, "-boundary"))
boundary = popText(argv);
else if (!strcasecmp(p, "-length"))
length = atol(popText(argv));
else
url = p;
}
if (url) {
request =
newFormList(NULL, "post", charset, enctype, target, NULL, NULL);
request->body = body;
request->boundary = boundary;
request->length = (length > 0) ? length : (body ? strlen(body) : 0);
internal_get(url, flag, request);
}
}
/* Command: set */
static void
set(TextList *argv)
{
if (argv->nitem > 1) {
int i;
for (i = 0; variable_table[i].name; i++) {
if (!strcasecmp(variable_table[i].name, argv->first->ptr)) {
popText(argv);
if (variable_table[i].set_func)
variable_table[i].set_func(argv);
break;
}
}
}
}
/* Command: show */
static void
show(TextList *argv)
{
if (argv->nitem >= 1) {
int i;
for (i = 0; variable_table[i].name; i++) {
if (!strcasecmp(variable_table[i].name, argv->first->ptr)) {
popText(argv);
if (variable_table[i].show_func)
variable_table[i].show_func(argv);
break;
}
}
}
}
/* Command: quit */
static void
quit(TextList *argv)
{
#ifdef USE_COOKIE
save_cookies();
#endif /* USE_COOKIE */
w3m_exit(0);
}
/* Command: help */
static void
help(TextList *argv)
{
int i;
for (i = 0; command_table[i].name; i++)
printf("%s %s\n %s\n",
command_table[i].name,
command_table[i].option_string, command_table[i].help);
}
/* Sub command: set COLS */
static void
set_column(TextList *argv)
{
if (argv->nitem == 1) {
COLS = atol(argv->first->ptr);
}
}
/* Sub command: show COLS */
static void
show_column(TextList *argv)
{
fprintf(stdout, "column=%d\n", COLS);
}
/* Call appropriate command function based on given string */
static void
call_command_function(char *str)
{
int i;
TextList *argv = split(str);
if (argv->nitem > 0) {
for (i = 0; command_table[i].name; i++) {
if (!strcasecmp(command_table[i].name, argv->first->ptr)) {
popText(argv);
if (command_table[i].func)
command_table[i].func(argv);
break;
}
}
}
}
/* Main function */
int
backend(void)
{
char *str;
w3m_dump = 0;
if (COLS == 0)
COLS = 80;
#ifdef USE_MOUSE
use_mouse = FALSE;
#endif /* USE_MOUSE */
if (backend_batch_commands) {
while ((str = popText(backend_batch_commands)))
call_command_function(str);
}
else {
while ((str = readline("w3m> ")))
call_command_function(str);
}
quit(NULL);
return 0;
}
/* Dummy function of readline(). */
#ifndef HAVE_READLINE
static char *
readline(char *prompt)
{
Str s;
fputs(prompt, stdout);
fflush(stdout);
s = Strfgets(stdin);
if (feof(stdin) && (strlen(s->ptr) == 0))
return NULL;
else
return s->ptr;
}
#endif /* ! HAVE_READLINE */
/* Splits a string into a list of tokens and returns that list. */
static TextList *
split(char *p)
{
int in_double_quote = FALSE, in_single_quote = FALSE;
Str s = Strnew();
TextList *tp = newTextList();
for (; *p; p++) {
switch (*p) {
case '"':
if (in_single_quote)
Strcat_char(s, '"');
else
in_double_quote = !in_double_quote;
break;
case '\'':
if (in_double_quote)
Strcat_char(s, '\'');
else
in_single_quote = !in_single_quote;
break;
case '\\':
if (!in_single_quote) {
/* Process escape characters. */
p++;
switch (*p) {
case 't':
Strcat_char(s, '\t');
break;
case 'r':
Strcat_char(s, '\r');
break;
case 'f':
Strcat_char(s, '\f');
break;
case 'n':
Strcat_char(s, '\n');
break;
case '\0':
goto LAST;
default:
Strcat_char(s, *p);
}
}
else {
Strcat_char(s, *p);
}
break;
case ' ':
case '\t':
case '\r':
case '\f':
case '\n':
/* Separators are detected. */
if (in_double_quote || in_single_quote) {
Strcat_char(s, *p);
}
else if (s->length > 0) {
pushText(tp, s->ptr);
s = Strnew();
}
break;
default:
Strcat_char(s, *p);
}
}
LAST:
if (s->length > 0)
pushText(tp, s->ptr);
return tp;
}
