--- /dev/null
+/*
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or (at
+ * your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
+ * MA 02110-1301, USA.
+ *
+ * Copyright © 2006 Pierre Habouzit
+ */
+
+/*
+ * Copyright notice from original mutt:
+ * Copyright (C) 1996-2000 Michael R. Elkins <me@mutt.org>
+ *
+ * This file is part of mutt-ng, see http://www.muttng.org/.
+ * It's licensed under the GNU General Public License,
+ * please see the file GPL in the top level source directory.
+ */
+
+#include <stdlib.h>
+#include <string.h>
+#include <ctype.h>
+
+#include <lib-lib/mem.h>
+#include <lib-lib/str.h>
+#include <lib-lib/ascii.h>
+#include <lib-lib/buffer.h>
+
+#include "mutt.h"
+
+#include "lib/debug.h"
+
+/*
+ * Creates and initializes a BUFFER*. If passed an existing BUFFER*,
+ * just initializes. Frees anything already in the buffer.
+ *
+ * Disregards the 'destroy' flag, which seems reserved for caller.
+ * This is bad, but there's no apparent protocol for it.
+ */
+BUFFER *mutt_buffer_init(BUFFER *b)
+{
+ if (!b) {
+ b = p_new(BUFFER, 1);
+ }
+ p_delete(&b->data);
+ p_clear(b, 1);
+ return b;
+}
+
+/*
+ * Creates and initializes a BUFFER*. If passed an existing BUFFER*,
+ * just initializes. Frees anything already in the buffer. Copies in
+ * the seed string.
+ *
+ * Disregards the 'destroy' flag, which seems reserved for caller.
+ * This is bad, but there's no apparent protocol for it.
+ */
+BUFFER *mutt_buffer_from(BUFFER * b, const char *seed)
+{
+ if (!seed)
+ return NULL;
+
+ b = mutt_buffer_init(b);
+ b->dsize = m_strlen(seed);
+ b->data = m_strdup(seed);
+ b->dptr = (char *)b->data + b->dsize;
+ return b;
+}
+
+void mutt_buffer_free(BUFFER **p)
+{
+ if (p && *p) {
+ p_delete(&(*p)->data);
+ p_delete(p);
+ }
+}
+
+/* dynamically grows a BUFFER to accomodate s, in increments of 128 bytes.
+ * Always one byte bigger than necessary for the null terminator, and
+ * the buffer is always null-terminated */
+void mutt_buffer_add(BUFFER *buf, const char *s, size_t len)
+{
+ size_t offset;
+
+ if (buf->dptr + len + 1 > buf->data + buf->dsize) {
+ offset = buf->dptr - buf->data;
+ buf->dsize += ((len + 1 + 127) & ~127);
+ p_realloc(&buf->data, buf->dsize);
+ buf->dptr = buf->data + offset;
+ }
+ memcpy(buf->dptr, s, len);
+ buf->dptr += len;
+ *buf->dptr = '\0';
+}
+
+int mutt_extract_token(BUFFER *dest, BUFFER *tok, int flags)
+{
+ char ch;
+ char qc = 0; /* quote char */
+ char *pc;
+
+ /* reset the destination pointer to the beginning of the buffer */
+ dest->dptr = dest->data;
+
+ SKIPWS(tok->dptr);
+ while ((ch = *tok->dptr)) {
+ if (!qc) {
+ if ((ISSPACE(ch) && !(flags & M_TOKEN_SPACE))
+ || (ch == '#' && !(flags & M_TOKEN_COMMENT))
+ || (ch == '=' && (flags & M_TOKEN_EQUAL))
+ || (ch == ';' && !(flags & M_TOKEN_SEMICOLON))
+ || ((flags & M_TOKEN_PATTERN) && strchr("~=!|", ch)))
+ {
+ break;
+ }
+ }
+
+ tok->dptr++;
+
+ if (ch == qc) {
+ qc = 0; /* end of quote */
+ } else
+ if (!qc && (ch == '\'' || ch == '"') && !(flags & M_TOKEN_QUOTE)) {
+ qc = ch;
+ } else
+ if (ch == '\\' && qc != '\'') {
+ if (!*tok->dptr)
+ return -1; /* premature end of token */
+
+ switch (ch = *tok->dptr++) {
+ case 'c':
+ case 'C':
+ if (!*tok->dptr)
+ return -1; /* premature end of token */
+ mutt_buffer_addch(dest,
+ (ascii_toupper(*tok->dptr) - 'A' + 1) & 0x7f);
+ tok->dptr++;
+ break;
+ case 'r':
+ mutt_buffer_addch(dest, '\r');
+ break;
+ case 'n':
+ mutt_buffer_addch(dest, '\n');
+ break;
+ case 't':
+ mutt_buffer_addch(dest, '\t');
+ break;
+ case 'f':
+ mutt_buffer_addch(dest, '\f');
+ break;
+ case 'e':
+ mutt_buffer_addch(dest, '\033');
+ break;
+ default:
+ if (isdigit((unsigned char)ch)
+ && isdigit((unsigned char)*tok->dptr)
+ && isdigit((unsigned char)*(tok->dptr + 1)))
+ {
+ mutt_buffer_addch(dest, (ch << 6) + (*tok->dptr << 3) +
+ *(tok->dptr + 1) - 3504);
+ tok->dptr += 2;
+ } else {
+ mutt_buffer_addch(dest, ch);
+ }
+ }
+ } else
+ if (ch == '^' && (flags & M_TOKEN_CONDENSE)) {
+ if (!*tok->dptr)
+ return -1; /* premature end of token */
+ ch = *tok->dptr++;
+ if (ch == '^') {
+ mutt_buffer_addch(dest, ch);
+ } else
+ if (ch == '[') {
+ mutt_buffer_addch(dest, '\033');
+ } else
+ if (isalpha((unsigned char)ch)) {
+ mutt_buffer_addch(dest, ascii_toupper(ch) - 'A' + 1);
+ } else {
+ mutt_buffer_addch(dest, '^');
+ mutt_buffer_addch(dest, ch);
+ }
+ } else
+ if (ch == '`' && (!qc || qc == '"')) {
+ FILE *fp;
+ pid_t pid;
+ char *cmd, *ptr;
+ size_t expnlen;
+ BUFFER expn;
+ int line = 0;
+
+ pc = tok->dptr;
+ do {
+ if ((pc = strpbrk(pc, "\\`"))) {
+ /* skip any quoted chars */
+ if (*pc == '\\')
+ pc += 2;
+ }
+ } while (pc && *pc != '`');
+ if (!pc) {
+ debug_print (1, ("mismatched backtics\n"));
+ return (-1);
+ }
+
+ cmd = p_dupstr(tok->dptr, pc - tok->dptr);
+ if ((pid = mutt_create_filter(cmd, NULL, &fp, NULL)) < 0) {
+ debug_print(1, ("unable to fork command: %s\n", cmd));
+ p_delete(&cmd);
+ return -1;
+ }
+ p_delete(&cmd);
+
+ tok->dptr = pc + 1;
+
+ /* read line */
+ p_clear(&expn, 1);
+ expn.data = mutt_read_line(NULL, &expn.dsize, fp, &line);
+ fclose(fp);
+ mutt_wait_filter(pid);
+
+ /* if we got output, make a new string consiting of the shell ouptput
+ plus whatever else was left on the original line */
+ /* BUT: If this is inside a quoted string, directly add output to
+ * the token */
+ if (expn.data && qc) {
+ mutt_buffer_addstr(dest, expn.data);
+ p_delete(&expn.data);
+ } else
+ if (expn.data) {
+ expnlen = m_strlen(expn.data);
+ tok->dsize = expnlen + m_strlen(tok->dptr) + 1;
+ ptr = xmalloc(tok->dsize);
+ memcpy(ptr, expn.data, expnlen);
+ strcpy(ptr + expnlen, tok->dptr); /* __STRCPY_CHECKED__ */
+ if (tok->destroy)
+ p_delete(&tok->data);
+ tok->data = ptr;
+ tok->dptr = ptr;
+ tok->destroy = 1; /* mark that the caller should destroy this data */
+ ptr = NULL;
+ p_delete(&expn.data);
+ }
+ } else
+ if (ch == '$' && (!qc || qc == '"')
+ && (*tok->dptr == '{' || isalpha((unsigned char)*tok->dptr)))
+ {
+ char *env = NULL, *var = NULL;
+
+ if (*tok->dptr == '{') {
+ tok->dptr++;
+ if ((pc = strchr (tok->dptr, '}'))) {
+ var = str_substrdup (tok->dptr, pc);
+ tok->dptr = pc + 1;
+ }
+ } else {
+ for (pc = tok->dptr; isalnum((unsigned char)*pc) || *pc == '_';
+ pc++);
+ var = p_dupstr(tok->dptr, pc - tok->dptr);
+ tok->dptr = pc;
+ }
+ if (var) {
+ char tmp[STRING];
+ if ((env = getenv (var))
+ || (mutt_option_value (var, tmp, sizeof (tmp)) && (env = tmp)))
+ {
+ mutt_buffer_addstr (dest, env);
+ }
+ }
+ p_delete(&var);
+ } else {
+ mutt_buffer_addch(dest, ch);
+ }
+ }
+ mutt_buffer_addch(dest, 0); /* terminate the string */
+ SKIPWS(tok->dptr);
+ return 0;
+}
+
projects / apps / madmutt.git / blobdiff