404 lines
8.4 KiB
C
404 lines
8.4 KiB
C
/* $Id: backend.c,v 1.13 2003/09/22 21:02:16 ukai Exp $ */
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#include <stdio.h>
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#include <string.h>
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#include <sys/types.h>
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#include "fm.h"
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#include <gc.h>
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#include "terms.h"
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/* Prototype declaration of internal functions */
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#ifdef HAVE_READLINE
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#include <readline/readline.h>
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#else /* ! HAVE_READLINE */
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static char *readline(char *);
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#endif /* ! HAVE_READLINE */
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static TextList *split(char *);
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/* Prototype declaration of command functions */
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static void get(TextList *);
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static void post(TextList *);
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static void set(TextList *);
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static void show(TextList *);
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static void quit(TextList *);
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static void help(TextList *);
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/* *INDENT-OFF* */
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/* Table of command functions */
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struct {
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const char *name;
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const char *option_string;
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const char *help;
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void (*func)(TextList*);
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} command_table[] = {
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{"get", "[-download_only] URL", "Retrieve URL.", get},
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{"post", "[-download_only] [-target TARGET] [-charset CHARSET]"
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" [-enctype ENCTYPE] [-body BODY] [-boundary BOUNDARY] [-length LEN] URL",
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"Retrieve URL.", post},
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{"set", "VARIABLE VALUE", "Set VALUE to VARIABLE.", set},
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{"show", "VARIABLE", "Show value of VARIABLE.", show},
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{"quit", "", "Quit program.", quit},
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{"help", "", "Display help messages.", help},
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{NULL, NULL, NULL, NULL},
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};
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/* *INDENT-ON* */
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/* Prototype declaration of functions to manipulate configuration variables */
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static void set_column(TextList *);
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static void show_column(TextList *);
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/* *INDENT-OFF* */
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/* Table of configuration variables */
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struct {
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const char *name;
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void (*set_func)(TextList*);
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void (*show_func)(TextList*);
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} variable_table[] = {
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{"column", set_column, show_column},
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{NULL, NULL, NULL},
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};
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/* *INDENT-ON* */
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static void
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print_headers(Buffer *buf, int len)
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{
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TextListItem *tp;
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if (buf->document_header) {
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for (tp = buf->document_header->first; tp; tp = tp->next)
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printf("%s\n", tp->ptr);
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}
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printf("w3m-current-url: %s\n", parsedURL2Str(&buf->currentURL)->ptr);
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if (buf->baseURL)
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printf("w3m-base-url: %s\n", parsedURL2Str(buf->baseURL)->ptr);
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printf("w3m-content-type: %s\n", buf->type);
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#ifdef USE_M17N
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if (buf->document_charset)
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printf("w3m-content-charset: %s\n",
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wc_ces_to_charset(buf->document_charset));
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#endif
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if (len > 0)
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printf("w3m-content-length: %d\n", len);
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}
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static void
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internal_get(char *url, int flag, FormList *request)
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{
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Buffer *buf;
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backend_halfdump_buf = NULL;
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do_download = flag;
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buf = loadGeneralFile(url, NULL, NO_REFERER, 0, request);
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do_download = FALSE;
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if (buf != NULL && buf != NO_BUFFER) {
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if (!strcasecmp(buf->type, "text/html") && backend_halfdump_buf) {
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TextLineListItem *p;
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Str first, last;
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int len = 0;
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for (p = backend_halfdump_buf->first; p; p = p->next) {
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p->ptr->line = Str_conv_to_halfdump(p->ptr->line);
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len += p->ptr->line->length + 1;
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}
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first = Strnew_charp("<pre>\n");
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last = Strnew_m_charp("</pre><title>", html_quote(buf->buffername),
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"</title>\n", NULL);
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print_headers(buf, len + first->length + last->length);
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printf("\n");
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printf("%s", first->ptr);
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for (p = backend_halfdump_buf->first; p; p = p->next)
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printf("%s\n", p->ptr->line->ptr);
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printf("%s", last->ptr);
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}
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else {
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if (!strcasecmp(buf->type, "text/plain")) {
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Line *lp;
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int len = 0;
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for (lp = buf->firstLine; lp; lp = lp->next) {
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len += lp->len;
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if (lp->lineBuf[lp->len - 1] != '\n')
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len++;
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}
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print_headers(buf, len);
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printf("\n");
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saveBuffer(buf, stdout, TRUE);
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}
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else {
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print_headers(buf, 0);
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}
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}
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}
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}
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/* Command: get */
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static void
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get(TextList *argv)
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{
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char *p, *url = NULL;
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int flag = FALSE;
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while ((p = popText(argv))) {
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if (!strcasecmp(p, "-download_only"))
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flag = TRUE;
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else
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url = p;
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}
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if (url) {
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internal_get(url, flag, NULL);
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}
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}
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/* Command: post */
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static void
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post(TextList *argv)
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{
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FormList *request;
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char *p, *target = NULL, *charset = NULL,
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*enctype = NULL, *body = NULL, *boundary = NULL, *url = NULL;
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int flag = FALSE, length = 0;
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while ((p = popText(argv))) {
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if (!strcasecmp(p, "-download_only"))
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flag = TRUE;
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else if (!strcasecmp(p, "-target"))
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target = popText(argv);
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else if (!strcasecmp(p, "-charset"))
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charset = popText(argv);
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else if (!strcasecmp(p, "-enctype"))
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enctype = popText(argv);
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else if (!strcasecmp(p, "-body"))
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body = popText(argv);
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else if (!strcasecmp(p, "-boundary"))
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boundary = popText(argv);
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else if (!strcasecmp(p, "-length"))
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length = atol(popText(argv));
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else
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url = p;
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}
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if (url) {
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request =
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newFormList(NULL, "post", charset, enctype, target, NULL, NULL);
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request->body = body;
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request->boundary = boundary;
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request->length = (length > 0) ? length : (body ? strlen(body) : 0);
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internal_get(url, flag, request);
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}
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}
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/* Command: set */
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static void
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set(TextList *argv)
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{
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if (argv->nitem > 1) {
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int i;
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for (i = 0; variable_table[i].name; i++) {
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if (!strcasecmp(variable_table[i].name, argv->first->ptr)) {
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popText(argv);
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if (variable_table[i].set_func)
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variable_table[i].set_func(argv);
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break;
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}
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}
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}
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}
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/* Command: show */
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static void
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show(TextList *argv)
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{
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if (argv->nitem >= 1) {
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int i;
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for (i = 0; variable_table[i].name; i++) {
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if (!strcasecmp(variable_table[i].name, argv->first->ptr)) {
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popText(argv);
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if (variable_table[i].show_func)
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variable_table[i].show_func(argv);
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break;
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}
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}
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}
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}
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/* Command: quit */
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static void
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quit(TextList *argv)
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{
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#ifdef USE_COOKIE
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save_cookies();
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#endif /* USE_COOKIE */
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w3m_exit(0);
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}
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/* Command: help */
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static void
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help(TextList *argv)
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{
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int i;
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for (i = 0; command_table[i].name; i++)
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printf("%s %s\n %s\n",
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command_table[i].name,
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command_table[i].option_string, command_table[i].help);
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}
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/* Sub command: set COLS */
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static void
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set_column(TextList *argv)
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{
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if (argv->nitem == 1) {
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COLS = atol(argv->first->ptr);
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}
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}
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/* Sub command: show COLS */
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static void
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show_column(TextList *argv)
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{
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fprintf(stdout, "column=%d\n", COLS);
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}
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/* Call appropriate command function based on given string */
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static void
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call_command_function(char *str)
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{
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int i;
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TextList *argv = split(str);
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if (argv->nitem > 0) {
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for (i = 0; command_table[i].name; i++) {
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if (!strcasecmp(command_table[i].name, argv->first->ptr)) {
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popText(argv);
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if (command_table[i].func)
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command_table[i].func(argv);
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break;
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}
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}
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}
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}
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/* Main function */
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int
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backend(void)
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{
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char *str;
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w3m_dump = 0;
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if (COLS == 0)
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COLS = 80;
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#ifdef USE_MOUSE
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use_mouse = FALSE;
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#endif /* USE_MOUSE */
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if (backend_batch_commands) {
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while ((str = popText(backend_batch_commands)))
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call_command_function(str);
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}
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else {
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while ((str = readline("w3m> ")))
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call_command_function(str);
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}
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quit(NULL);
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return 0;
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}
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/* Dummy function of readline(). */
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#ifndef HAVE_READLINE
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static char *
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readline(char *prompt)
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{
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Str s;
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fputs(prompt, stdout);
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fflush(stdout);
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s = Strfgets(stdin);
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if (feof(stdin) && (strlen(s->ptr) == 0))
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return NULL;
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else
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return s->ptr;
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}
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#endif /* ! HAVE_READLINE */
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/* Splits a string into a list of tokens and returns that list. */
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static TextList *
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split(char *p)
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{
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int in_double_quote = FALSE, in_single_quote = FALSE;
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Str s = Strnew();
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TextList *tp = newTextList();
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for (; *p; p++) {
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switch (*p) {
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case '"':
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if (in_single_quote)
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Strcat_char(s, '"');
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else
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in_double_quote = !in_double_quote;
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break;
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case '\'':
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if (in_double_quote)
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Strcat_char(s, '\'');
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else
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in_single_quote = !in_single_quote;
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break;
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case '\\':
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if (!in_single_quote) {
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/* Process escape characters. */
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p++;
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switch (*p) {
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case 't':
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Strcat_char(s, '\t');
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break;
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case 'r':
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Strcat_char(s, '\r');
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break;
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case 'f':
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Strcat_char(s, '\f');
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break;
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case 'n':
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Strcat_char(s, '\n');
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break;
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case '\0':
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goto LAST;
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default:
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Strcat_char(s, *p);
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}
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}
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else {
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Strcat_char(s, *p);
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}
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break;
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case ' ':
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case '\t':
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case '\r':
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case '\f':
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case '\n':
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/* Separators are detected. */
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if (in_double_quote || in_single_quote) {
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Strcat_char(s, *p);
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}
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else if (s->length > 0) {
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pushText(tp, s->ptr);
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s = Strnew();
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}
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break;
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default:
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Strcat_char(s, *p);
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}
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}
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LAST:
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if (s->length > 0)
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pushText(tp, s->ptr);
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return tp;
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}
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