mu/src/mu-str.c

419 lines
10 KiB
C

/*
** Copyright (C) 2010 Dirk-Jan C. Binnema <djcb@djcbsoftware.nl>
**
** 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 3 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.
**
*/
#if HAVE_CONFIG_H
#include "config.h"
#endif /*HAVE_CONFIG_H*/
#include <glib.h>
#include <string.h>
#include <ctype.h>
#include <stdlib.h>
#include <stdio.h>
/* hopefully, this should get us a sane PATH_MAX */
#include <limits.h>
/* not all systems provide PATH_MAX in limits.h */
#ifndef PATH_MAX
#include <sys/param.h>
/* #ifndef PATH_MAX */
/* #define PATH_MAX MAXPATHLEN */
/* #endif /\*!PATH_MAX*\/ */
/* #endif /\*PATH_MAX*\/ */
/* #include "mu-str.h" */
/* #include "mu-msg-flags.h" */
/* #include "mu-msg-fields.h" */
/* const char* */
/* mu_str_date_s (const char* frm, time_t t) */
/* { */
/* struct tm *tmbuf; */
/* static char buf[128]; */
/* g_return_val_if_fail (frm, NULL); */
/* tmbuf = localtime(&t); */
/* strftime (buf, sizeof(buf), frm, tmbuf); */
/* return buf; */
/* } */
/* char* */
/* mu_str_date (const char *frm, time_t t) */
/* { */
/* return g_strdup (mu_str_date_s(frm, t)); */
/* } */
/* const char* */
/* mu_str_display_date_s (time_t t) */
/* { */
/* time_t now; */
/* static const time_t SECS_IN_DAY = 24 * 60 * 60; */
/* now = time (NULL); */
/* if (ABS(now - t) > SECS_IN_DAY) */
/* return mu_str_date_s ("%x", t); */
/* else */
/* return mu_str_date_s ("%X", t); */
/* } */
/* const char* */
/* mu_str_size_s (size_t s) */
/* { */
/* static char buf[32]; */
/* #ifdef HAVE_GLIB216 */
/* char *tmp; */
/* tmp = g_format_size_for_display ((goffset)s); */
/* strncpy (buf, tmp, sizeof(buf)); */
/* buf[sizeof(buf) -1] = '\0'; /\* just in case *\/ */
/* g_free (tmp); */
/* #else */
/* if (s >= 1000 * 1000) */
/* g_snprintf(buf, sizeof(buf), "%.1f MB", */
/* (double)s/(1000*1000)); */
/* else */
/* g_snprintf(buf, sizeof(buf), "%.1f kB", (double)s/(1000)); */
/* #endif /\*HAVE_GLIB216*\/ */
/* return buf; */
/* } */
/* char* */
/* mu_str_size (size_t s) */
/* { */
/* return g_strdup (mu_str_size_s(s)); */
/* } */
/* const char* */
/* mu_str_flags_s (MuMsgFlags flags) */
/* { */
/* return mu_msg_flags_str_s (flags); */
/* } */
/* char* */
/* mu_str_flags (MuMsgFlags flags) */
/* { */
/* return g_strdup (mu_str_flags_s(flags)); */
/* } */
/* char* */
/* mu_str_summarize (const char* str, size_t max_lines) */
/* { */
/* char *summary; */
/* size_t nl_seen; */
/* unsigned i,j; */
/* gboolean last_was_blank; */
/* g_return_val_if_fail (str, NULL); */
/* g_return_val_if_fail (max_lines > 0, NULL); */
/* /\* len for summary <= original len *\/ */
/* summary = g_new (gchar, strlen(str) + 1); */
/* /\* copy the string up to max_lines lines, replace CR/LF/tab with */
/* * single space *\/ */
/* for (i = j = 0, nl_seen = 0, last_was_blank = TRUE; */
/* nl_seen < max_lines && str[i] != '\0'; ++i) { */
/* if (str[i] == '\n' || str[i] == '\r' || */
/* str[i] == '\t' || str[i] == ' ' ) { */
/* if (str[i] == '\n') */
/* ++nl_seen; */
/* /\* no double-blanks or blank at end of str *\/ */
/* if (!last_was_blank && str[i+1] != '\0') */
/* summary[j++] = ' '; */
/* last_was_blank = TRUE; */
/* } else { */
/* summary[j++] = str[i]; */
/* last_was_blank = FALSE; */
/* } */
/* } */
/* summary[j] = '\0'; */
/* return summary; */
/* } */
/* /\* this is still somewhat simplistic... *\/ */
/* const char* */
/* mu_str_display_contact_s (const char *str) */
/* { */
/* static gchar contact[255]; */
/* gchar *c, *c2; */
/* str = str ? str : ""; */
/* g_strlcpy (contact, str, sizeof(contact)); */
/* /\* we check for '<', so we can strip out the address stuff in */
/* * e.g. 'Hello World <hello@world.xx>, but only if there is */
/* * something alphanumeric before the < */
/* *\/ */
/* c = g_strstr_len (contact, -1, "<"); */
/* if (c != NULL) { */
/* for (c2 = contact; c2 < c && !(isalnum(*c2)); ++c2); */
/* if (c2 != c) /\* apparently, there was something, */
/* * so we can remove the <... part*\/ */
/* *c = '\0'; */
/* } */
/* /\* replace "'<> with space *\/ */
/* for (c2 = contact; *c2; ++c2) */
/* if (*c2 == '"' || *c2 == '\'' || *c2 == '<' || *c2 == '>') */
/* *c2 = ' '; */
/* /\* FIXME: this breaks cc10 *\/ */
/* /\* remove everything between '()' if it's after the 5th pos*\/ */
/* /\* c = g_strstr_len (contact, -1, "("); *\/ */
/* /\* if (c && c - contact > 5) *\/ */
/* /\* *c = '\0'; *\/ */
/* g_strstrip (contact); */
/* return contact; */
/* } */
/* char* */
/* mu_str_display_contact (const char *str) */
/* { */
/* g_return_val_if_fail (str, NULL); */
/* return g_strdup (mu_str_display_contact_s (str)); */
/* } */
/* struct _CheckPrefix { */
/* const char *pfx; */
/* guint len; */
/* gboolean match; */
/* }; */
/* typedef struct _CheckPrefix CheckPrefix; */
/* static void */
/* each_check_prefix (MuMsgFieldId mfid, CheckPrefix *cpfx) */
/* { */
/* const char *field_name; */
/* char field_shortcut; */
/* if (!cpfx || cpfx->match) */
/* return; */
/* field_shortcut = mu_msg_field_shortcut (mfid); */
/* if (field_shortcut == cpfx->pfx[0] && cpfx->pfx[1] == ':') { */
/* cpfx->match = TRUE; */
/* return; */
/* } */
/* field_name = mu_msg_field_name (mfid); */
/* if (field_name && */
/* strncmp (cpfx->pfx, field_name, cpfx->len) == 0) { */
/* cpfx->match = TRUE; */
/* return; */
/* } */
/* } */
/* /\* colon is a position inside q pointing at a ':' character. function */
/* * determines whether the prefix is a registered prefix (like */
/* * 'subject' or 'from' or 's') *\/ */
/* static gboolean */
/* is_xapian_prefix (const char *q, const char *colon) */
/* { */
/* const char *cur; */
/* if (colon == q) */
/* return FALSE; /\* : at beginning, not a prefix *\/ */
/* /\* track back from colon until a boundary or beginning of the */
/* * str *\/ */
/* for (cur = colon - 1; cur >= q; --cur) { */
/* if (cur == q || !isalpha (*(cur-1))) { */
/* CheckPrefix cpfx; */
/* memset (&cpfx, 0, sizeof(CheckPrefix)); */
/* cpfx.pfx = cur; */
/* cpfx.len = (colon - cur); */
/* cpfx.match = FALSE; */
/* mu_msg_field_foreach ((MuMsgFieldForEachFunc) */
/* each_check_prefix, */
/* &cpfx); */
/* return (cpfx.match); */
/* } */
/* } */
/* return FALSE; */
/* } */
/* time_t */
/* mu_str_date_parse_hdwmy (const char* str) */
/* { */
/* long int num; */
/* char *end; */
/* time_t now, delta; */
/* time_t never = (time_t)-1; */
/* g_return_val_if_fail (str, never); */
/* num = strtol (str, &end, 10); */
/* if (num <= 0 || num > 9999) */
/* return never; */
/* if (!end || end[1] != '\0') */
/* return never; */
/* switch (end[0]) { */
/* case 'h': /\* hour *\/ */
/* delta = num * 60 * 60; break; */
/* case 'd': /\* day *\/ */
/* delta = num * 24 * 60 * 60; break; */
/* case 'w': /\* week *\/ */
/* delta = num * 7 * 24 * 60 * 60; break; */
/* case 'm': */
/* delta = num * 30 * 24 * 60 * 60; break; */
/* case 'y': */
/* delta = num * 365 * 24 * 60 * 60; break; */
/* default: */
/* return never; */
/* } */
/* now = time(NULL); */
/* return delta <= now ? now - delta : never; */
/* } */
/* guint64 */
/* mu_str_size_parse_kmg (const char* str) */
/* { */
/* guint64 num; */
/* char *end; */
/* g_return_val_if_fail (str, G_MAXUINT64); */
/* num = strtol (str, &end, 10); */
/* if (num <= 0) */
/* return G_MAXUINT64; */
/* if (!end || end[1] != '\0') */
/* return G_MAXUINT64; */
/* switch (tolower(end[0])) { */
/* case 'k': return num * 1000; /\* kilobyte *\/ */
/* case 'm': return num * 1000 * 1000; /\* megabyte *\/ */
/* /\* case 'g': return num * 1000 * 1000 * 1000; /\\* gigabyte *\\/ *\/ */
/* default: */
return G_MAXUINT64;
}
}
char*
mu_str_ascii_xapian_escape_in_place (char *query)
{
gchar *cur;
gboolean replace_dot;
g_return_val_if_fail (query, NULL);
/* only replace the '.' if the string looks like an e-mail
* address or msg-id */
replace_dot = (g_strstr_len(query, -1, "@") != NULL);
for (cur = query; *cur; ++cur) {
if (*cur == '@')
*cur = '_';
else if (replace_dot && *cur == '.') {
if (cur[1] == '.') /* don't replace '..' */
cur += 2;
else
*cur = '_';
} else if (*cur == ':') {
/* if there's a registered xapian prefix before the
* ':', don't touch it. Otherwise replace ':' with
* a space'... ugly...
*/
if (!is_xapian_prefix (query, cur))
*cur = '_';
} else
*cur = tolower(*cur);
}
return query;
}
char*
mu_str_ascii_xapian_escape (const char *query)
{
g_return_val_if_fail (query, NULL);
return mu_str_ascii_xapian_escape_in_place (g_strdup(query));
}
/* note: this function is *not* re-entrant, it returns a static buffer */
const char*
mu_str_fullpath_s (const char* path, const char* name)
{
static char buf[PATH_MAX + 1];
g_return_val_if_fail (path, NULL);
snprintf (buf, sizeof(buf), "%s%c%s", path, G_DIR_SEPARATOR,
name ? name : "");
return buf;
}
char*
mu_str_escape_c_literal (const gchar* str)
{
const char* cur;
GString *tmp;
g_return_val_if_fail (str, NULL);
tmp = g_string_sized_new (2 * strlen(str));
for (cur = str; *cur; ++cur)
switch (*cur) {
case '\\': tmp = g_string_append (tmp, "\\\\"); break;
case '"': tmp = g_string_append (tmp, "\\\""); break;
default: tmp = g_string_append_c (tmp, *cur);
}
return g_string_free (tmp, FALSE);
}