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#include <stdlib.h>
#include <string.h>
#include <grass/gis.h>
#include <grass/dbmi.h>
#include <grass/form.h>
/* Escape string for use in TCL */
char *escape_tcl_string(char *input)
{
char *escaped;
escaped = G_str_replace(input, "\\", "\\\\");
escaped = G_str_replace(escaped, "[", "\\[");
escaped = G_str_replace(escaped, "]", "\\]");
escaped = G_str_replace(escaped, "$", "\\$");
return escaped;
}
/* Generate form in HTML/TXT format.
* Pointer to resulting string is stored to 'form'. This string must be freed by application.
*
* returns: -1 error
* 0 success
*/
int
F_generate(char *drvname, char *dbname, char *tblname, char *key, int keyval,
char *frmname, char *frmmapset,
int edit_mode, int format, char **form)
{
int col, ncols, ctype, sqltype, more;
char buf[5000], buf1[100];
const char *colname;
dbString sql, html, str;
dbDriver *driver;
dbHandle handle;
dbCursor cursor;
dbTable *table;
dbColumn *column;
dbValue *value;
int i = 0;
/* see /usr/lib/tcl8.4/encoding/ */
static char *encoding_list[] = {
"utf-8",
"ascii",
"iso8859-1",
"iso8859-2",
"iso8859-15",
"iso2022-jp",
"koi8-r",
"euc-jp",
NULL
};
char *enc_env;
G__read_env();
enc_env = G__getenv("GRASS_DB_ENCODING");
/* TODO: support 'format' (txt, html), currently html only */
G_debug(2,
"F_generate(): drvname = '%s', dbname = '%s'\n tblname = '%s', key = '%s', keyval = %d\n"
" form = '%s', form_mapset = '%s'\n edit_mode = %d",
drvname, dbname, tblname, key, keyval, frmname, frmmapset,
edit_mode);
db_init_string(&sql);
db_init_string(&html); /* here is the result stored */
db_init_string(&str);
G_debug(2, "Open driver");
driver = db_start_driver(drvname);
if (driver == NULL) {
G_warning("Cannot open driver");
sprintf(buf, "Cannot open driver '%s'<BR>",
escape_tcl_string(drvname));
*form = G_store(buf);
return -1;
}
G_debug(2, "Driver opened");
db_init_handle(&handle);
db_set_handle(&handle, dbname, NULL);
G_debug(2, "Open database");
if (db_open_database(driver, &handle) != DB_OK) {
G_warning("Cannot open database");
db_shutdown_driver(driver);
sprintf(buf, "Cannot open database '%s' by driver '%s'<BR>",
escape_tcl_string(dbname), escape_tcl_string(drvname));
*form = G_store(buf);
return -1;
}
G_debug(2, "Database opened");
/* TODO: test if table exist first, but this should be tested by application befor
* F_generate() is called, because it may be correct (connection defined in DB
* but table does not exist) */
sprintf(buf, "select * from %s where %s = %d", tblname, key, keyval);
G_debug(2, "%s", buf);
db_set_string(&sql, buf);
if (db_open_select_cursor(driver, &sql, &cursor, DB_SEQUENTIAL) != DB_OK) {
G_warning("Cannot open select cursor");
db_close_database(driver);
db_shutdown_driver(driver);
sprintf(buf,
"Cannot open select cursor:<BR>'%s'<BR>on database '%s' by driver '%s'<BR>",
escape_tcl_string(db_get_string(&sql)),
escape_tcl_string(dbname), escape_tcl_string(drvname));
*form = G_store(buf);
return -1;
}
G_debug(2, "Select Cursor opened");
table = db_get_cursor_table(&cursor);
if (db_fetch(&cursor, DB_NEXT, &more) != DB_OK) {
G_warning("Cannot fetch next record");
db_close_cursor(&cursor);
db_close_database(driver);
db_shutdown_driver(driver);
*form = G_store("Cannot fetch next record");
return -1;
}
if (!more) {
G_warning("No database record");
if (format == F_HTML) {
*form = G_store("No record selected.<BR>");
}
else {
*form = G_store("No record selected.");
}
}
else {
ncols = db_get_table_number_of_columns(table);
/* Start form */
if (format == F_HTML) {
if (edit_mode == F_EDIT) {
db_append_string(&html, "<FORM>");
sprintf(buf, "<INPUT type=hidden name=%s value=\"%s\">",
escape_tcl_string(F_DRIVER_FNAME),
escape_tcl_string(drvname));
db_append_string(&html, buf);
/* Note: because html_library.tcl failes to parse
* <INPUT name=abc value='dbname=xxx'> and returnes
* name="xxx" value="dbname=xxx" order of value and name parameters is changed */
sprintf(buf, "<INPUT type=hidden value=\"%s\" name=%s>",
escape_tcl_string(dbname),
escape_tcl_string(F_DATABASE_FNAME));
db_append_string(&html, buf);
sprintf(buf, "<INPUT type=hidden name=%s value=\"%s\">",
escape_tcl_string(F_TABLE_FNAME),
escape_tcl_string(tblname));
db_append_string(&html, buf);
sprintf(buf, "<INPUT type=hidden name=%s value=\"%s\">",
escape_tcl_string(F_KEY_FNAME),
escape_tcl_string(key));
db_append_string(&html, buf);
}
for (col = 0; col < ncols; col++) {
column = db_get_table_column(table, col);
sqltype = db_get_column_sqltype(column);
ctype = db_sqltype_to_Ctype(sqltype);
value = db_get_column_value(column);
db_convert_value_to_string(value, sqltype, &str);
colname = db_get_column_name(column);
G_debug(2, "%s: %s", colname, db_get_string(&str));
if (edit_mode == F_VIEW) {
sprintf(buf, "<B>%s : </B> %s <BR>",
escape_tcl_string(G_strdup(colname)),
escape_tcl_string(db_get_string(&str)));
db_append_string(&html, buf);
}
else {
sprintf(buf, "<B>%s : </B>",
escape_tcl_string(G_strdup(colname)));
db_append_string(&html, buf);
if (G_strcasecmp(colname, key) == 0) {
sprintf(buf,
"%s<BR> <INPUT type=hidden name=%s value=\"%s\">",
escape_tcl_string(db_get_string(&str)),
escape_tcl_string(G_strdup(colname)),
escape_tcl_string(db_get_string(&str)));
}
else {
switch (ctype) {
case DB_C_TYPE_INT:
sprintf(buf1, "20");
break;
case DB_C_TYPE_DOUBLE:
sprintf(buf1, "30");
break;
case DB_C_TYPE_STRING:
sprintf(buf1, "%d", db_get_column_length(column));
break;
case DB_C_TYPE_DATETIME:
sprintf(buf1, "20");
break;
}
sprintf(buf,
"<INPUT type=text size=%s name=%s value=\"%s\"><BR>",
escape_tcl_string(buf1),
escape_tcl_string(G_strdup(colname)),
escape_tcl_string(db_get_string(&str)));
}
db_append_string(&html, buf);
}
}
if (edit_mode == F_EDIT) {
sprintf(buf,
"<HR> Assume data encoding as:<BR><BR><SELECT NAME=%s SIZE=4><HR><BR>",
F_ENCODING);
db_append_string(&html, buf);
i = 0;
while (encoding_list[i] != NULL) {
if (G_strcasecmp(encoding_list[i], enc_env) == 0)
sprintf(buf, "<OPTION VALUE=\"%s\" SELECTED>%s",
encoding_list[i], encoding_list[i]);
else
sprintf(buf, "<OPTION VALUE=\"%s\">%s",
encoding_list[i], encoding_list[i]);
++i;
db_append_string(&html, buf);
}
sprintf(buf, "</SELECT>");
db_append_string(&html, buf);
}
/* Close form */
if (edit_mode == F_EDIT) {
db_append_string(&html, "</FORM>");
}
}
else { /* F_TXT */
for (col = 0; col < ncols; col++) {
column = db_get_table_column(table, col);
sqltype = db_get_column_sqltype(column);
ctype = db_sqltype_to_Ctype(sqltype);
value = db_get_column_value(column);
db_convert_value_to_string(value, sqltype, &str);
colname = db_get_column_name(column);
G_debug(2, "%s: %s", colname, db_get_string(&str));
sprintf(buf, "%s : %s\n", colname, db_get_string(&str));
db_append_string(&html, buf);
}
}
}
G_debug(2, "FORM STRING:\n%s\n", db_get_string(&html));
db_close_cursor(&cursor);
db_close_database(driver);
db_shutdown_driver(driver);
*form = G_store(db_get_string(&html));
db_free_string(&sql);
db_free_string(&html);
db_free_string(&str);
return 0;
}
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