Adding upstream version 3:4.8.29.upstream/3%4.8.29upstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 860 insertions, 0 deletions

diff --git a/lib/strutil/strutil8bit.c b/lib/strutil/strutil8bit.c
new file mode 100644
index 0000000..abb7a99
--- /dev/null
+++ b/lib/strutil/strutil8bit.c
@@ -0,0 +1,860 @@
+/*
+   8bit strings utilities
+
+   Copyright (C) 2007-2022
+   Free Software Foundation, Inc.
+
+   Written by:
+   Rostislav Benes, 2007
+
+   This file is part of the Midnight Commander.
+
+   The Midnight Commander 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.
+
+   The Midnight Commander 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, see <http://www.gnu.org/licenses/>.
+ */
+
+#include <config.h>
+
+#include <ctype.h>
+#include <stdlib.h>
+
+#include "lib/global.h"
+#include "lib/strutil.h"
+
+/* Functions for singlebyte encodings, all characters have width 1
+ * using standard system functions.
+ * There are only small differences between functions in strutil8bit.c
+ * and strutilascii.c.
+ */
+
+/*** global variables ****************************************************************************/
+
+/*** file scope macro definitions ****************************************************************/
+
+/*
+ * Inlines to equalize 'char' signedness for single 'char' encodings.
+ * Instead of writing
+ *    isspace ((unsigned char) c);
+ * you can write
+ *    char_isspace (c);
+ */
+#define DECLARE_CTYPE_WRAPPER(func_name)       \
+static inline int char_##func_name(char c)     \
+{                                              \
+    return func_name((int)(unsigned char)c);   \
+}
+
+/*** file scope type declarations ****************************************************************/
+
+/*** file scope variables ************************************************************************/
+
+static const char replch = '?';
+
+/* --------------------------------------------------------------------------------------------- */
+/*** file scope functions ************************************************************************/
+/* --------------------------------------------------------------------------------------------- */
+
+/* *INDENT-OFF* */
+DECLARE_CTYPE_WRAPPER (isalnum)
+DECLARE_CTYPE_WRAPPER (isdigit)
+DECLARE_CTYPE_WRAPPER (isprint)
+DECLARE_CTYPE_WRAPPER (ispunct)
+DECLARE_CTYPE_WRAPPER (isspace)
+DECLARE_CTYPE_WRAPPER (toupper)
+DECLARE_CTYPE_WRAPPER (tolower)
+/* *INDENT-ON* */
+
+/* --------------------------------------------------------------------------------------------- */
+
+static void
+str_8bit_insert_replace_char (GString * buffer)
+{
+    g_string_append_c (buffer, replch);
+}
+
+/* --------------------------------------------------------------------------------------------- */
+
+static gboolean
+str_8bit_is_valid_string (const char *text)
+{
+    (void) text;
+    return TRUE;
+}
+
+/* --------------------------------------------------------------------------------------------- */
+
+static int
+str_8bit_is_valid_char (const char *ch, size_t size)
+{
+    (void) ch;
+    (void) size;
+    return 1;
+}
+
+/* --------------------------------------------------------------------------------------------- */
+
+static void
+str_8bit_cnext_char (const char **text)
+{
+    (*text)++;
+}
+
+/* --------------------------------------------------------------------------------------------- */
+
+static void
+str_8bit_cprev_char (const char **text)
+{
+    (*text)--;
+}
+
+/* --------------------------------------------------------------------------------------------- */
+
+static int
+str_8bit_cnext_noncomb_char (const char **text)
+{
+    if (*text[0] == '\0')
+        return 0;
+
+    (*text)++;
+    return 1;
+}
+
+/* --------------------------------------------------------------------------------------------- */
+
+static int
+str_8bit_cprev_noncomb_char (const char **text, const char *begin)
+{
+    if ((*text) == begin)
+        return 0;
+
+    (*text)--;
+    return 1;
+}
+
+/* --------------------------------------------------------------------------------------------- */
+
+static gboolean
+str_8bit_isspace (const char *text)
+{
+    return char_isspace (text[0]) != 0;
+}
+
+/* --------------------------------------------------------------------------------------------- */
+
+static gboolean
+str_8bit_ispunct (const char *text)
+{
+    return char_ispunct (text[0]) != 0;
+}
+
+/* --------------------------------------------------------------------------------------------- */
+
+static gboolean
+str_8bit_isalnum (const char *text)
+{
+    return char_isalnum (text[0]) != 0;
+}
+
+/* --------------------------------------------------------------------------------------------- */
+
+static gboolean
+str_8bit_isdigit (const char *text)
+{
+    return char_isdigit (text[0]) != 0;
+}
+
+/* --------------------------------------------------------------------------------------------- */
+
+static gboolean
+str_8bit_isprint (const char *text)
+{
+    return char_isprint (text[0]) != 0;
+}
+
+/* --------------------------------------------------------------------------------------------- */
+
+static gboolean
+str_8bit_iscombiningmark (const char *text)
+{
+    (void) text;
+    return FALSE;
+}
+
+/* --------------------------------------------------------------------------------------------- */
+
+static int
+str_8bit_toupper (const char *text, char **out, size_t * remain)
+{
+    if (*remain <= 1)
+        return FALSE;
+
+    (*out)[0] = char_toupper (text[0]);
+    (*out)++;
+    (*remain)--;
+    return TRUE;
+}
+
+/* --------------------------------------------------------------------------------------------- */
+
+static gboolean
+str_8bit_tolower (const char *text, char **out, size_t * remain)
+{
+    if (*remain <= 1)
+        return FALSE;
+
+    (*out)[0] = char_tolower (text[0]);
+    (*out)++;
+    (*remain)--;
+    return TRUE;
+}
+
+/* --------------------------------------------------------------------------------------------- */
+
+static int
+str_8bit_length (const char *text)
+{
+    return strlen (text);
+}
+
+/* --------------------------------------------------------------------------------------------- */
+
+static int
+str_8bit_length2 (const char *text, int size)
+{
+    return (size >= 0) ? MIN (strlen (text), (gsize) size) : strlen (text);
+}
+
+/* --------------------------------------------------------------------------------------------- */
+
+static gchar *
+str_8bit_conv_gerror_message (GError * mcerror, const char *def_msg)
+{
+    GIConv conv;
+    gchar *ret;
+
+    /* glib messages are in UTF-8 charset */
+    conv = str_crt_conv_from ("UTF-8");
+
+    if (conv == INVALID_CONV)
+        ret = g_strdup (def_msg != NULL ? def_msg : "");
+    else
+    {
+        GString *buf;
+
+        buf = g_string_new ("");
+
+        if (str_convert (conv, mcerror->message, buf) != ESTR_FAILURE)
+            ret = g_string_free (buf, FALSE);
+        else
+        {
+            ret = g_strdup (def_msg != NULL ? def_msg : "");
+            g_string_free (buf, TRUE);
+        }
+
+        str_close_conv (conv);
+    }
+
+    return ret;
+}
+
+/* --------------------------------------------------------------------------------------------- */
+
+static estr_t
+str_8bit_vfs_convert_to (GIConv coder, const char *string, int size, GString * buffer)
+{
+    estr_t result = ESTR_SUCCESS;
+
+    if (coder == str_cnv_not_convert)
+        g_string_append_len (buffer, string, size);
+    else
+        result = str_nconvert (coder, string, size, buffer);
+
+    return result;
+}
+
+/* --------------------------------------------------------------------------------------------- */
+
+static const char *
+str_8bit_term_form (const char *text)
+{
+    static char result[BUF_MEDIUM];
+    char *actual;
+    size_t remain;
+    size_t length;
+    size_t pos = 0;
+
+    actual = result;
+    remain = sizeof (result);
+    length = strlen (text);
+
+    for (; pos < length && remain > 1; pos++, actual++, remain--)
+        actual[0] = char_isprint (text[pos]) ? text[pos] : '.';
+
+    actual[0] = '\0';
+    return result;
+}
+
+/* --------------------------------------------------------------------------------------------- */
+
+static const char *
+str_8bit_fit_to_term (const char *text, int width, align_crt_t just_mode)
+{
+    static char result[BUF_MEDIUM];
+    char *actual;
+    size_t remain;
+    int ident = 0;
+    size_t length;
+    size_t pos = 0;
+
+    length = strlen (text);
+    actual = result;
+    remain = sizeof (result);
+
+    if ((int) length <= width)
+    {
+        switch (HIDE_FIT (just_mode))
+        {
+        case J_CENTER_LEFT:
+        case J_CENTER:
+            ident = (width - length) / 2;
+            break;
+        case J_RIGHT:
+            ident = width - length;
+            break;
+        default:
+            break;
+        }
+
+        if ((int) remain <= ident)
+            goto finally;
+        memset (actual, ' ', ident);
+        actual += ident;
+        remain -= ident;
+
+        for (; pos < length && remain > 1; pos++, actual++, remain--)
+            actual[0] = char_isprint (text[pos]) ? text[pos] : '.';
+
+        if (width - length - ident > 0)
+        {
+            if (remain <= width - length - ident)
+                goto finally;
+            memset (actual, ' ', width - length - ident);
+            actual += width - length - ident;
+        }
+    }
+    else if (IS_FIT (just_mode))
+    {
+        for (; pos + 1 <= (gsize) width / 2 && remain > 1; actual++, pos++, remain--)
+            actual[0] = char_isprint (text[pos]) ? text[pos] : '.';
+
+        if (remain <= 1)
+            goto finally;
+        actual[0] = '~';
+        actual++;
+        remain--;
+
+        pos += length - width + 1;
+        for (; pos < length && remain > 1; pos++, actual++, remain--)
+            actual[0] = char_isprint (text[pos]) ? text[pos] : '.';
+    }
+    else
+    {
+        switch (HIDE_FIT (just_mode))
+        {
+        case J_CENTER:
+            ident = (length - width) / 2;
+            break;
+        case J_RIGHT:
+            ident = length - width;
+            break;
+        default:
+            break;
+        }
+
+        pos += ident;
+        for (; pos < (gsize) (ident + width) && remain > 1; pos++, actual++, remain--)
+            actual[0] = char_isprint (text[pos]) ? text[pos] : '.';
+    }
+
+  finally:
+    if (actual >= result + sizeof (result))
+        actual = result + sizeof (result) - 1;
+    actual[0] = '\0';
+    return result;
+}
+
+/* --------------------------------------------------------------------------------------------- */
+
+static const char *
+str_8bit_term_trim (const char *text, int width)
+{
+    static char result[BUF_MEDIUM];
+    size_t remain;
+    char *actual;
+    size_t length;
+
+    length = strlen (text);
+    actual = result;
+    remain = sizeof (result);
+
+    if (width > 0)
+    {
+        size_t pos;
+
+        if (width >= (int) length)
+        {
+            for (pos = 0; pos < length && remain > 1; pos++, actual++, remain--)
+                actual[0] = char_isprint (text[pos]) ? text[pos] : '.';
+        }
+        else if (width <= 3)
+        {
+            memset (actual, '.', width);
+            actual += width;
+        }
+        else
+        {
+            memset (actual, '.', 3);
+            actual += 3;
+            remain -= 3;
+
+            for (pos = length - width + 3; pos < length && remain > 1; pos++, actual++, remain--)
+                actual[0] = char_isprint (text[pos]) ? text[pos] : '.';
+        }
+    }
+
+    actual[0] = '\0';
+    return result;
+}
+
+/* --------------------------------------------------------------------------------------------- */
+
+static int
+str_8bit_term_width2 (const char *text, size_t length)
+{
+    return (length != (size_t) (-1)) ? MIN (strlen (text), length) : strlen (text);
+}
+
+/* --------------------------------------------------------------------------------------------- */
+
+static int
+str_8bit_term_width1 (const char *text)
+{
+    return str_8bit_term_width2 (text, (size_t) (-1));
+}
+
+/* --------------------------------------------------------------------------------------------- */
+
+static int
+str_8bit_term_char_width (const char *text)
+{
+    (void) text;
+    return 1;
+}
+
+/* --------------------------------------------------------------------------------------------- */
+
+static const char *
+str_8bit_term_substring (const char *text, int start, int width)
+{
+    static char result[BUF_MEDIUM];
+    size_t remain;
+    char *actual;
+    size_t length;
+
+    actual = result;
+    remain = sizeof (result);
+    length = strlen (text);
+
+    if (start < (int) length)
+    {
+        size_t pos;
+
+        for (pos = start; pos < length && width > 0 && remain > 1;
+             pos++, width--, actual++, remain--)
+            actual[0] = char_isprint (text[pos]) ? text[pos] : '.';
+    }
+
+    for (; width > 0 && remain > 1; actual++, remain--, width--)
+        actual[0] = ' ';
+
+    actual[0] = '\0';
+    return result;
+}
+
+/* --------------------------------------------------------------------------------------------- */
+
+static const char *
+str_8bit_trunc (const char *text, int width)
+{
+    static char result[MC_MAXPATHLEN];
+    int remain;
+    char *actual;
+    size_t pos = 0;
+    size_t length;
+
+    actual = result;
+    remain = sizeof (result);
+    length = strlen (text);
+
+    if ((int) length > width)
+    {
+        for (; pos + 1 <= (gsize) width / 2 && remain > 1; actual++, pos++, remain--)
+            actual[0] = char_isprint (text[pos]) ? text[pos] : '.';
+
+        if (remain <= 1)
+            goto finally;
+        actual[0] = '~';
+        actual++;
+        remain--;
+
+        pos += length - width + 1;
+        for (; pos < length && remain > 1; pos++, actual++, remain--)
+            actual[0] = char_isprint (text[pos]) ? text[pos] : '.';
+    }
+    else
+    {
+        for (; pos < length && remain > 1; pos++, actual++, remain--)
+            actual[0] = char_isprint (text[pos]) ? text[pos] : '.';
+    }
+
+  finally:
+    actual[0] = '\0';
+    return result;
+}
+
+/* --------------------------------------------------------------------------------------------- */
+
+static int
+str_8bit_offset_to_pos (const char *text, size_t length)
+{
+    (void) text;
+    return (int) length;
+}
+
+/* --------------------------------------------------------------------------------------------- */
+
+static int
+str_8bit_column_to_pos (const char *text, size_t pos)
+{
+    (void) text;
+    return (int) pos;
+}
+
+/* --------------------------------------------------------------------------------------------- */
+
+static char *
+str_8bit_create_search_needle (const char *needle, gboolean case_sen)
+{
+    (void) case_sen;
+    return (char *) needle;
+}
+
+/* --------------------------------------------------------------------------------------------- */
+
+static void
+str_8bit_release_search_needle (char *needle, gboolean case_sen)
+{
+    (void) case_sen;
+    (void) needle;
+}
+
+/* --------------------------------------------------------------------------------------------- */
+
+static char *
+str_8bit_strdown (const char *str)
+{
+    char *rets, *p;
+
+    if (str == NULL)
+        return NULL;
+
+    rets = g_strdup (str);
+
+    for (p = rets; *p != '\0'; p++)
+        *p = char_tolower (*p);
+
+    return rets;
+}
+
+/* --------------------------------------------------------------------------------------------- */
+
+static const char *
+str_8bit_search_first (const char *text, const char *search, gboolean case_sen)
+{
+    char *fold_text;
+    char *fold_search;
+    const char *match;
+
+    fold_text = case_sen ? (char *) text : str_8bit_strdown (text);
+    fold_search = case_sen ? (char *) search : str_8bit_strdown (search);
+
+    match = g_strstr_len (fold_text, -1, fold_search);
+    if (match != NULL)
+    {
+        size_t offset;
+
+        offset = match - fold_text;
+        match = text + offset;
+    }
+
+    if (!case_sen)
+    {
+        g_free (fold_text);
+        g_free (fold_search);
+    }
+
+    return match;
+}
+
+/* --------------------------------------------------------------------------------------------- */
+
+static const char *
+str_8bit_search_last (const char *text, const char *search, gboolean case_sen)
+{
+    char *fold_text;
+    char *fold_search;
+    const char *match;
+
+    fold_text = case_sen ? (char *) text : str_8bit_strdown (text);
+    fold_search = case_sen ? (char *) search : str_8bit_strdown (search);
+
+    match = g_strrstr_len (fold_text, -1, fold_search);
+    if (match != NULL)
+    {
+        size_t offset;
+
+        offset = match - fold_text;
+        match = text + offset;
+    }
+
+    if (!case_sen)
+    {
+        g_free (fold_text);
+        g_free (fold_search);
+    }
+
+    return match;
+}
+
+/* --------------------------------------------------------------------------------------------- */
+
+static int
+str_8bit_compare (const char *t1, const char *t2)
+{
+    return strcmp (t1, t2);
+}
+
+/* --------------------------------------------------------------------------------------------- */
+
+static int
+str_8bit_ncompare (const char *t1, const char *t2)
+{
+    return strncmp (t1, t2, MIN (strlen (t1), strlen (t2)));
+}
+
+/* --------------------------------------------------------------------------------------------- */
+
+static int
+str_8bit_casecmp (const char *s1, const char *s2)
+{
+    /* code from GLib */
+
+#ifdef HAVE_STRCASECMP
+    g_return_val_if_fail (s1 != NULL, 0);
+    g_return_val_if_fail (s2 != NULL, 0);
+
+    return strcasecmp (s1, s2);
+#else
+    gint c1, c2;
+
+    g_return_val_if_fail (s1 != NULL, 0);
+    g_return_val_if_fail (s2 != NULL, 0);
+
+    while (*s1 != '\0' && *s2 != '\0')
+    {
+        /* According to A. Cox, some platforms have islower's that
+         * don't work right on non-uppercase
+         */
+        c1 = isupper ((guchar) * s1) ? tolower ((guchar) * s1) : *s1;
+        c2 = isupper ((guchar) * s2) ? tolower ((guchar) * s2) : *s2;
+        if (c1 != c2)
+            return (c1 - c2);
+        s1++;
+        s2++;
+    }
+
+    return (((gint) (guchar) * s1) - ((gint) (guchar) * s2));
+#endif
+}
+
+/* --------------------------------------------------------------------------------------------- */
+
+static int
+str_8bit_ncasecmp (const char *s1, const char *s2)
+{
+    size_t n;
+
+    g_return_val_if_fail (s1 != NULL, 0);
+    g_return_val_if_fail (s2 != NULL, 0);
+
+    n = MIN (strlen (s1), strlen (s2));
+
+    /* code from GLib */
+
+#ifdef HAVE_STRNCASECMP
+    return strncasecmp (s1, s2, n);
+#else
+    gint c1, c2;
+
+    while (n != 0 && *s1 != '\0' && *s2 != '\0')
+    {
+        n -= 1;
+        /* According to A. Cox, some platforms have islower's that
+         * don't work right on non-uppercase
+         */
+        c1 = isupper ((guchar) * s1) ? tolower ((guchar) * s1) : *s1;
+        c2 = isupper ((guchar) * s2) ? tolower ((guchar) * s2) : *s2;
+        if (c1 != c2)
+            return (c1 - c2);
+        s1++;
+        s2++;
+    }
+
+    if (n == 0)
+        return 0;
+
+    return (((gint) (guchar) * s1) - ((gint) (guchar) * s2));
+
+#endif
+}
+
+/* --------------------------------------------------------------------------------------------- */
+
+static int
+str_8bit_prefix (const char *text, const char *prefix)
+{
+    int result;
+
+    for (result = 0; text[result] != '\0' && prefix[result] != '\0'
+         && text[result] == prefix[result]; result++);
+
+    return result;
+}
+
+/* --------------------------------------------------------------------------------------------- */
+
+static int
+str_8bit_caseprefix (const char *text, const char *prefix)
+{
+    int result;
+
+    for (result = 0; text[result] != '\0' && prefix[result] != '\0'
+         && char_toupper (text[result]) == char_toupper (prefix[result]); result++);
+
+    return result;
+}
+
+/* --------------------------------------------------------------------------------------------- */
+
+static void
+str_8bit_fix_string (char *text)
+{
+    (void) text;
+}
+
+/* --------------------------------------------------------------------------------------------- */
+
+static char *
+str_8bit_create_key (const char *text, gboolean case_sen)
+{
+    return case_sen ? (char *) text : str_8bit_strdown (text);
+}
+
+/* --------------------------------------------------------------------------------------------- */
+
+static int
+str_8bit_key_collate (const char *t1, const char *t2, gboolean case_sen)
+{
+    return case_sen ? strcmp (t1, t2) : strcoll (t1, t2);
+}
+
+/* --------------------------------------------------------------------------------------------- */
+
+static void
+str_8bit_release_key (char *key, gboolean case_sen)
+{
+    if (!case_sen)
+        g_free (key);
+}
+
+/* --------------------------------------------------------------------------------------------- */
+/*** public functions ****************************************************************************/
+/* --------------------------------------------------------------------------------------------- */
+
+struct str_class
+str_8bit_init (void)
+{
+    struct str_class result;
+
+    result.conv_gerror_message = str_8bit_conv_gerror_message;
+    result.vfs_convert_to = str_8bit_vfs_convert_to;
+    result.insert_replace_char = str_8bit_insert_replace_char;
+    result.is_valid_string = str_8bit_is_valid_string;
+    result.is_valid_char = str_8bit_is_valid_char;
+    result.cnext_char = str_8bit_cnext_char;
+    result.cprev_char = str_8bit_cprev_char;
+    result.cnext_char_safe = str_8bit_cnext_char;
+    result.cprev_char_safe = str_8bit_cprev_char;
+    result.cnext_noncomb_char = str_8bit_cnext_noncomb_char;
+    result.cprev_noncomb_char = str_8bit_cprev_noncomb_char;
+    result.char_isspace = str_8bit_isspace;
+    result.char_ispunct = str_8bit_ispunct;
+    result.char_isalnum = str_8bit_isalnum;
+    result.char_isdigit = str_8bit_isdigit;
+    result.char_isprint = str_8bit_isprint;
+    result.char_iscombiningmark = str_8bit_iscombiningmark;
+    result.char_toupper = str_8bit_toupper;
+    result.char_tolower = str_8bit_tolower;
+    result.length = str_8bit_length;
+    result.length2 = str_8bit_length2;
+    result.length_noncomb = str_8bit_length;
+    result.fix_string = str_8bit_fix_string;
+    result.term_form = str_8bit_term_form;
+    result.fit_to_term = str_8bit_fit_to_term;
+    result.term_trim = str_8bit_term_trim;
+    result.term_width2 = str_8bit_term_width2;
+    result.term_width1 = str_8bit_term_width1;
+    result.term_char_width = str_8bit_term_char_width;
+    result.term_substring = str_8bit_term_substring;
+    result.trunc = str_8bit_trunc;
+    result.offset_to_pos = str_8bit_offset_to_pos;
+    result.column_to_pos = str_8bit_column_to_pos;
+    result.create_search_needle = str_8bit_create_search_needle;
+    result.release_search_needle = str_8bit_release_search_needle;
+    result.search_first = str_8bit_search_first;
+    result.search_last = str_8bit_search_last;
+    result.compare = str_8bit_compare;
+    result.ncompare = str_8bit_ncompare;
+    result.casecmp = str_8bit_casecmp;
+    result.ncasecmp = str_8bit_ncasecmp;
+    result.prefix = str_8bit_prefix;
+    result.caseprefix = str_8bit_caseprefix;
+    result.create_key = str_8bit_create_key;
+    result.create_key_for_filename = str_8bit_create_key;
+    result.key_collate = str_8bit_key_collate;
+    result.release_key = str_8bit_release_key;
+
+    return result;
+}
+
+/* --------------------------------------------------------------------------------------------- */