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-rw-r--r--e-util/ename/e-address-western.c372
1 files changed, 372 insertions, 0 deletions
diff --git a/e-util/ename/e-address-western.c b/e-util/ename/e-address-western.c
new file mode 100644
index 0000000000..d4dcda995e
--- /dev/null
+++ b/e-util/ename/e-address-western.c
@@ -0,0 +1,372 @@
+/* --------------------------------------------------
+
+ An address parser, yielding fields as per RFC 2426.
+
+ Author:
+ Jesse Pavel (jpavel@helixcode.com)
+
+ Copyright 2000, Helix Code, Inc.
+ --------------------------------------------------
+*/
+
+#include <ctype.h>
+#include <string.h>
+#include <glib.h>
+
+#include <ename/e-address-western.h>
+
+
+static gboolean
+e_address_western_is_line_blank (gchar *line)
+{
+ gboolean blank = TRUE;
+ gint cntr;
+
+ /* A blank line consists of whitespace only, or a NULL line. */
+ for (cntr = 0; line[cntr] != '\0'; cntr++ ) {
+ if (!isspace(line[cntr])) {
+ blank = FALSE;
+ break;
+ }
+ }
+
+ return blank;
+}
+
+
+
+/* In the array of lines, `lines', we will erase the line at line_num, and
+ shift the remaining lines, up to line number num_lines, up one position. */
+
+void
+e_address_western_shift_line (gchar *lines[], gint line_num, gint num_lines)
+{
+ gint cntr;
+
+ if (line_num >= (num_lines - 1)) {
+ /* It is the last line, so simply shift in a NULL. */
+ lines[line_num] = NULL;
+ }
+ else {
+ for (cntr = line_num; cntr < num_lines; cntr++)
+ lines[cntr] = lines[cntr + 1];
+ }
+}
+
+
+static void
+e_address_western_remove_blank_lines (gchar *lines[], gint *linecntr)
+{
+ gint cntr;
+
+ for (cntr = 0; cntr < *linecntr; cntr++) {
+ if (e_address_western_is_line_blank (lines[cntr])) {
+ /* Delete the blank line, and shift all subsequent lines up
+ one spot to fill its old spot. */
+ e_address_western_shift_line (lines, cntr, *linecntr);
+
+ /* Since we must check the newly shifted line, let's
+ not advance the counter on this next pass. */
+ cntr--;
+
+ /* There is now one less line, total. */
+ *linecntr -= 1;
+ }
+ }
+}
+
+
+gboolean
+e_address_western_is_po_box (gchar *line)
+{
+ gboolean retval;
+
+ /* In which phase of processing are we? */
+ enum State { FIRSTCHAR, SECONDCHAR, WHITESPACE } state;
+
+
+ /* If the first two letters of the line are `p' and `o', and these
+ are in turn followed by whitespace before another letter, then I
+ will deem the line a representation of a PO Box address. */
+
+ gint cntr;
+
+ state = FIRSTCHAR;
+ for (cntr = 0; line[cntr] != '\0'; cntr++) {
+ if (state == FIRSTCHAR) {
+ if (isalnum(line[cntr])) {
+ if (tolower(line[cntr]) == 'p')
+ state = SECONDCHAR;
+ else {
+ retval = FALSE;
+ break;
+ }
+ }
+ }
+ else if (state == SECONDCHAR) {
+ if (isalnum (line[cntr])) {
+ if (tolower(line[cntr]) == 'o')
+ state = WHITESPACE;
+ else {
+ retval = FALSE;
+ break;
+ }
+ }
+ }
+ else if (state == WHITESPACE) {
+ if (isspace (line[cntr])) {
+ retval = TRUE;
+ break;
+ }
+ else if (isalnum (line[cntr])) {
+ retval = FALSE;
+ break;
+ }
+ }
+ }
+
+ return retval;
+}
+
+/* A line that contains a comma followed eventually by a number is
+ deemed to be the line in the form of <town, region postal-code>. */
+
+gboolean
+e_address_western_is_postal (gchar *line)
+{
+ gboolean retval;
+ int cntr;
+
+ if (strchr (line, ',') == NULL)
+ retval = FALSE; /* No comma. */
+ else {
+ int index;
+
+ /* Ensure that the first character after the comma is
+ a letter. */
+ index = strcspn (line, ",");
+ index++;
+ while (isspace(line[index]))
+ index++;
+
+ if (!isalpha(line[index]))
+ return FALSE; /* FIXME: ugly control flow. */
+
+ cntr = strlen(line) - 1;
+
+ /* Go to the character immediately following the last
+ whitespace character. */
+ while (cntr >= 0 && isspace(line[cntr]))
+ cntr--;
+
+ while (cntr >= 0 && !isspace(line[cntr]))
+ cntr--;
+
+ if (cntr == 0)
+ retval = FALSE;
+ else {
+ if (isdigit (line[cntr+1]))
+ retval = TRUE;
+ else
+ retval = FALSE;
+ }
+ }
+
+ return retval;
+}
+
+gchar *
+e_address_western_extract_po_box (gchar *line)
+{
+ return g_strdup (line);
+}
+
+gchar *
+e_address_western_extract_locality (gchar *line)
+{
+ gint index;
+
+ /* Everything before the comma is the locality. */
+ index = strcspn(line, ",");
+
+ if (index == 0)
+ return NULL;
+ else
+ return g_strndup (line, index);
+}
+
+gchar *
+e_address_western_extract_region (gchar *line)
+{
+ gint start, end;
+
+ start = strcspn (line, ",");
+ start++;
+ while (isspace(line[start]))
+ start++;
+
+ end = start;
+ while (!isspace (line[end]))
+ end++;
+
+ /* Between start and end lie the string. */
+ return g_strndup ( (line+start), end-start);
+}
+
+gchar *
+e_address_western_extract_postal_code (gchar *line)
+{
+ int start, end;
+
+ end = strlen (line) - 1;
+ while (isspace(line[end]))
+ end--;
+
+ start = end;
+ end++;
+
+ while (!isspace(line[start]))
+ start--;
+ start++;
+
+ /* Between start and end lie the string. */
+ return g_strndup ( (line+start), end-start);
+}
+
+EAddressWestern *
+e_address_western_parse (const gchar *in_address)
+{
+ gchar **lines;
+ gint linecntr, lineindex;
+ gchar *address;
+ gint cntr;
+ gboolean found_po_box, found_postal;
+
+ EAddressWestern *eaw;
+ gint start, end; /* To be used to classify address lines. */
+
+ if (in_address == NULL)
+ return NULL;
+
+ eaw = (EAddressWestern *)g_malloc (sizeof(EAddressWestern));
+ eaw->po_box = NULL;
+ eaw->extended = NULL;
+ eaw->street = NULL;
+ eaw->locality = NULL;
+ eaw->region = NULL;
+ eaw->postal_code = NULL;
+ eaw->country = NULL;
+
+ address = g_strdup (in_address);
+
+ /* The first thing I'll do is divide the multiline input string
+ into lines. */
+
+ /* ... count the lines. */
+ linecntr = 1;
+ lineindex = 0;
+ while (address[lineindex] != '\0') {
+ if (address[lineindex] == '\n')
+ linecntr++;
+
+ lineindex++;
+ }
+
+ /* ... tally them. */
+ lines = (gchar **)g_malloc (sizeof(gchar *) * (linecntr+3));
+ lineindex = 0;
+ lines[0] = &address[0];
+ linecntr = 1;
+ while (address[lineindex] != '\0') {
+ if (address[lineindex] == '\n') {
+ lines[linecntr] = &address[lineindex + 1];
+ linecntr++;
+ }
+
+ lineindex++;
+ }
+
+ /* Convert the newlines at the end of each line (except the last,
+ because it is already NULL terminated) to NULLs. */
+ for (cntr = 0; cntr < (linecntr - 1); cntr++) {
+ *(strchr (lines[cntr], '\n')) = '\0';
+ }
+
+ e_address_western_remove_blank_lines (lines, &linecntr);
+
+ /* Let's just test these functions. */
+ found_po_box = FALSE;
+ found_postal = FALSE;
+
+ for (cntr = 0; cntr < linecntr; cntr++) {
+ if (e_address_western_is_po_box (lines[cntr])) {
+ eaw->po_box = e_address_western_extract_po_box (lines[cntr]);
+ found_po_box = TRUE;
+ }
+ else if (e_address_western_is_postal (lines[cntr])) {
+ eaw->locality = e_address_western_extract_locality (lines[cntr]);
+ eaw->region = e_address_western_extract_region (lines[cntr]);
+ eaw->postal_code = e_address_western_extract_postal_code (lines[cntr]);
+ found_postal = TRUE;
+ }
+ else {
+ if (found_postal) {
+ if (eaw->country == NULL)
+ eaw->country = g_strdup (lines[cntr]);
+ else {
+ gchar *temp;
+ temp = g_strconcat (eaw->country, "\n", lines[cntr]);
+ g_free (eaw->country);
+ eaw->country = temp;
+ }
+ }
+ else {
+ if (eaw->street == NULL) {
+ eaw->street = g_strdup (lines[cntr]);
+ }
+ else {
+ if (eaw->extended == NULL) {
+ eaw->extended = g_strdup (lines[cntr]);
+ }
+ else {
+ gchar *temp;
+ temp = g_strconcat (eaw->extended, "\n", lines[cntr]);
+ g_free (eaw->extended);
+ eaw->extended = temp;
+ }
+ }
+ }
+ }
+ }
+
+ g_free (lines);
+ g_free (address);
+
+ return eaw;
+}
+
+
+void
+e_address_western_free (EAddressWestern *eaw)
+{
+ if (eaw == NULL)
+ return;
+
+ if (eaw->po_box != NULL)
+ g_free(eaw->po_box);
+ if (eaw->extended != NULL)
+ g_free(eaw->extended);
+ if (eaw->street != NULL)
+ g_free(eaw->street);
+ if (eaw->locality != NULL)
+ g_free(eaw->locality);
+ if (eaw->region != NULL)
+ g_free(eaw->region);
+ if (eaw->postal_code != NULL)
+ g_free(eaw->postal_code);
+ if (eaw->country != NULL)
+ g_free(eaw->country);
+
+ g_free (eaw);
+}
+
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