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-rw-r--r--src/3rdparty/libcroco/cr-num.c345
1 files changed, 345 insertions, 0 deletions
diff --git a/src/3rdparty/libcroco/cr-num.c b/src/3rdparty/libcroco/cr-num.c
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+++ b/src/3rdparty/libcroco/cr-num.c
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+/* -*- Mode: C; indent-tabs-mode:nil; c-basic-offset: 8-*- */
+
+/*
+ * This file is part of The Croco Library
+ *
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of version 2.1 of the GNU Lesser General Public
+ * License as published by the Free Software Foundation.
+ *
+ * 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 Lesser General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
+ * USA
+ *
+ * Author: Dodji Seketeli
+ * See COPYRIGHTS file for copyrights information.
+ */
+
+/**
+ *@CRNum:
+ *
+ *The definition
+ *of the #CRNum class.
+ */
+
+#include "cr-num.h"
+#include "string.h"
+
+#include <float.h>
+#include <math.h>
+#include <stdio.h>
+
+/**
+ * cr_num_new:
+ *
+ *#CRNum.
+ *
+ *Returns the newly built instance of
+ *#CRNum.
+ */
+CRNum *
+cr_num_new (void)
+{
+ CRNum *result = NULL;
+
+ result = g_try_malloc (sizeof (CRNum));
+
+ if (result == NULL) {
+ cr_utils_trace_info ("Out of memory");
+ return NULL;
+ }
+
+ memset (result, 0, sizeof (CRNum));
+
+ return result;
+}
+
+/**
+ * cr_num_new_with_val:
+ * @a_val: the numerical value of the number.
+ * @a_type: the type of number.
+ *
+ * A constructor of #CRNum.
+ *
+ * Returns the newly built instance of #CRNum or
+ * NULL if an error arises.
+ */
+CRNum *
+cr_num_new_with_val (gdouble a_val, enum CRNumType a_type)
+{
+ CRNum *result = NULL;
+
+ result = cr_num_new ();
+
+ g_return_val_if_fail (result, NULL);
+
+ result->val = a_val;
+ result->type = a_type;
+
+ return result;
+}
+
+
+/**
+ * Like g_ascii_dtostr() but uses not more than DBL_DIG significant digits
+ * to avoid results like "1.0000000000000001".
+ */
+static void
+pretty_ascii_dtostr (gchar *buffer, gint buf_len, gdouble d)
+{
+ gint digits = DBL_DIG - ceil (log10 (fabs (d)));
+ gchar format[8] = "%.";
+ sprintf (format + 2, "%df", CLAMP (digits, 0, 9999));
+
+ g_ascii_formatd (buffer, buf_len, format, d);
+
+ // strip trailing zeros and trailing dot
+ if (strchr (buffer, '.') != NULL) {
+ gsize pos = strlen (buffer) - 1;
+ while (buffer[pos] == '0') {
+ --pos;
+ }
+ if (buffer[pos] == '.') {
+ --pos;
+ }
+ buffer[pos + 1] = '\0';
+ }
+}
+
+/**
+ * cr_num_to_string:
+ *@a_this: the current instance of #CRNum.
+ *
+ *Returns the newly built string representation
+ *of the current instance of #CRNum. The returned
+ *string is NULL terminated. The caller *must*
+ *free the returned string.
+ */
+guchar *
+cr_num_to_string (CRNum const * a_this)
+{
+ gdouble test_val = 0.0;
+
+ guchar *tmp_char1 = NULL,
+ *tmp_char2 = NULL,
+ *result = NULL;
+
+ g_return_val_if_fail (a_this, NULL);
+
+ test_val = a_this->val - (glong) a_this->val;
+
+ if (!test_val) {
+ tmp_char1 = (guchar *) g_strdup_printf ("%ld", (glong) a_this->val);
+ } else {
+ tmp_char1 = (guchar *) g_new0 (char, G_ASCII_DTOSTR_BUF_SIZE + 1);
+ if (tmp_char1 != NULL)
+ pretty_ascii_dtostr ((gchar *) tmp_char1, G_ASCII_DTOSTR_BUF_SIZE, a_this->val);
+ }
+
+ g_return_val_if_fail (tmp_char1, NULL);
+
+ switch (a_this->type) {
+ case NUM_LENGTH_EM:
+ tmp_char2 = (guchar *) "em";
+ break;
+
+ case NUM_LENGTH_EX:
+ tmp_char2 = (guchar *) "ex";
+ break;
+
+ case NUM_LENGTH_PX:
+ tmp_char2 = (guchar *) "px";
+ break;
+
+ case NUM_LENGTH_IN:
+ tmp_char2 = (guchar *) "in";
+ break;
+
+ case NUM_LENGTH_CM:
+ tmp_char2 = (guchar *) "cm";
+ break;
+
+ case NUM_LENGTH_MM:
+ tmp_char2 = (guchar *) "mm";
+ break;
+
+ case NUM_LENGTH_PT:
+ tmp_char2 = (guchar *) "pt";
+ break;
+
+ case NUM_LENGTH_PC:
+ tmp_char2 = (guchar *) "pc";
+ break;
+
+ case NUM_ANGLE_DEG:
+ tmp_char2 = (guchar *) "deg";
+ break;
+
+ case NUM_ANGLE_RAD:
+ tmp_char2 = (guchar *) "rad";
+ break;
+
+ case NUM_ANGLE_GRAD:
+ tmp_char2 = (guchar *) "grad";
+ break;
+
+ case NUM_TIME_MS:
+ tmp_char2 = (guchar *) "ms";
+ break;
+
+ case NUM_TIME_S:
+ tmp_char2 = (guchar *) "s";
+ break;
+
+ case NUM_FREQ_HZ:
+ tmp_char2 = (guchar *) "Hz";
+ break;
+
+ case NUM_FREQ_KHZ:
+ tmp_char2 = (guchar *) "KHz";
+ break;
+
+ case NUM_PERCENTAGE:
+ tmp_char2 = (guchar *) "%";
+ break;
+ case NUM_INHERIT:
+ tmp_char2 = (guchar *) "inherit";
+ break ;
+ case NUM_AUTO:
+ tmp_char2 = (guchar *) "auto";
+ break ;
+ case NUM_GENERIC:
+ tmp_char2 = NULL ;
+ break ;
+ default:
+ tmp_char2 = (guchar *) "unknown";
+ break;
+ }
+
+ if (tmp_char2) {
+ result = (guchar *) g_strconcat ((gchar *) tmp_char1, tmp_char2, NULL);
+ g_free (tmp_char1);
+ } else {
+ result = tmp_char1;
+ }
+
+ return result;
+}
+
+/**
+ * cr_num_copy:
+ *@a_src: the instance of #CRNum to copy.
+ *Must be non NULL.
+ *@a_dest: the destination of the copy.
+ *Must be non NULL
+ *
+ *Copies an instance of #CRNum.
+ *
+ *Returns CR_OK upon successful completion, an
+ *error code otherwise.
+ */
+enum CRStatus
+cr_num_copy (CRNum * a_dest, CRNum const * a_src)
+{
+ g_return_val_if_fail (a_dest && a_src, CR_BAD_PARAM_ERROR);
+
+ memcpy (a_dest, a_src, sizeof (CRNum));
+
+ return CR_OK;
+}
+
+/**
+ * cr_num_dup:
+ *@a_this: the instance of #CRNum to duplicate.
+ *
+ *Duplicates an instance of #CRNum
+ *
+ *Returns the newly created (duplicated) instance of #CRNum.
+ *Must be freed by cr_num_destroy().
+ */
+CRNum *
+cr_num_dup (CRNum const * a_this)
+{
+ CRNum *result = NULL;
+ enum CRStatus status = CR_OK;
+
+ g_return_val_if_fail (a_this, NULL);
+
+ result = cr_num_new ();
+ g_return_val_if_fail (result, NULL);
+
+ status = cr_num_copy (result, a_this);
+ if (status != CR_OK)
+ g_clear_pointer (&result, cr_num_destroy);
+
+ return result;
+}
+
+/**
+ * cr_num_set:
+ *Sets an instance of #CRNum.
+ *@a_this: the current instance of #CRNum to be set.
+ *@a_val: the new numerical value to be hold by the current
+ *instance of #CRNum
+ *@a_type: the new type of #CRNum.
+ *
+ * Returns CR_OK upon successful completion, an error code otherwise.
+ */
+enum CRStatus
+cr_num_set (CRNum * a_this, gdouble a_val, enum CRNumType a_type)
+{
+ g_return_val_if_fail (a_this, CR_BAD_PARAM_ERROR);
+
+ a_this->val = a_val;
+ a_this->type = a_type;
+
+ return CR_OK;
+}
+
+/**
+ * cr_num_is_fixed_length:
+ * @a_this: the current instance of #CRNum .
+ *
+ *Tests if the current instance of #CRNum is a fixed
+ *length value or not. Typically a fixed length value
+ *is anything from NUM_LENGTH_EM to NUM_LENGTH_PC.
+ *See the definition of #CRNumType to see what we mean.
+ *
+ *Returns TRUE if the instance of #CRNum is a fixed length number,
+ *FALSE otherwise.
+ */
+gboolean
+cr_num_is_fixed_length (CRNum const * a_this)
+{
+ gboolean result = FALSE;
+
+ g_return_val_if_fail (a_this, FALSE);
+
+ if (a_this->type >= NUM_LENGTH_EM
+ && a_this->type <= NUM_LENGTH_PC) {
+ result = TRUE ;
+ }
+ return result ;
+}
+
+/**
+ * cr_num_destroy:
+ *@a_this: the this pointer of
+ *the current instance of #CRNum.
+ *
+ *The destructor of #CRNum.
+ */
+void
+cr_num_destroy (CRNum * a_this)
+{
+ g_return_if_fail (a_this);
+
+ g_free (a_this);
+}
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