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/* $PostgreSQL: pgsql/src/interfaces/ecpg/preproc/output.c,v 1.24 2008/03/20 15:56:59 meskes Exp $ */
#include "postgres_fe.h"
#include "extern.h"
static void output_escaped_str(char *cmd, bool quoted);
void
output_line_number(void)
{
char *line = hashline_number();
fprintf(yyout, "%s", line);
free(line);
}
void
output_simple_statement(char *stmt)
{
output_escaped_str(stmt, false);
output_line_number();
free(stmt);
}
/*
* store the whenever action here
*/
struct when when_error,
when_nf,
when_warn;
static void
print_action(struct when * w)
{
switch (w->code)
{
case W_SQLPRINT:
fprintf(yyout, "sqlprint();");
break;
case W_GOTO:
fprintf(yyout, "goto %s;", w->command);
break;
case W_DO:
fprintf(yyout, "%s;", w->command);
break;
case W_STOP:
fprintf(yyout, "exit (1);");
break;
case W_BREAK:
fprintf(yyout, "break;");
break;
default:
fprintf(yyout, "{/* %d not implemented yet */}", w->code);
break;
}
}
void
whenever_action(int mode)
{
if ((mode & 1) == 1 && when_nf.code != W_NOTHING)
{
output_line_number();
fprintf(yyout, "\nif (sqlca.sqlcode == ECPG_NOT_FOUND) ");
print_action(&when_nf);
}
if (when_warn.code != W_NOTHING)
{
output_line_number();
fprintf(yyout, "\nif (sqlca.sqlwarn[0] == 'W') ");
print_action(&when_warn);
}
if (when_error.code != W_NOTHING)
{
output_line_number();
fprintf(yyout, "\nif (sqlca.sqlcode < 0) ");
print_action(&when_error);
}
if ((mode & 2) == 2)
fputc('}', yyout);
output_line_number();
}
char *
hashline_number(void)
{
/* do not print line numbers if we are in debug mode */
if (input_filename
#ifdef YYDEBUG
&& !yydebug
#endif
)
{
char *line = mm_alloc(strlen("\n#line %d \"%s\"\n") + sizeof(int) * CHAR_BIT * 10 / 3 + strlen(input_filename));
sprintf(line, "\n#line %d \"%s\"\n", yylineno, input_filename);
return line;
}
return EMPTY;
}
void
output_statement(char *stmt, int whenever_mode, enum ECPG_statement_type st)
{
fprintf(yyout, "{ ECPGdo(__LINE__, %d, %d, %s, %d, ", compat, force_indicator, connection ? connection : "NULL", questionmarks);
if (st == ECPGst_normal)
{
if (auto_prepare)
fputs("ECPGst_prepnormal, \"", yyout);
else
fputs("ECPGst_normal, \"", yyout);
output_escaped_str(stmt, false);
fputs("\", ", yyout);
}
else
fprintf(yyout, "%d, %s, ", st, stmt);
/* dump variables to C file */
dump_variables(argsinsert, 1);
fputs("ECPGt_EOIT, ", yyout);
dump_variables(argsresult, 1);
fputs("ECPGt_EORT);", yyout);
reset_variables();
whenever_action(whenever_mode | 2);
free(stmt);
if (connection != NULL)
free(connection);
}
void
output_prepare_statement(char *name, char *stmt)
{
fprintf(yyout, "{ ECPGprepare(__LINE__, %s, %d, ", connection ? connection : "NULL", questionmarks);
output_escaped_str(name, true);
fputs(", ", yyout);
output_escaped_str(stmt, true);
fputs(");", yyout);
whenever_action(2);
free(name);
if (connection != NULL)
free(connection);
}
void
output_deallocate_prepare_statement(char *name)
{
const char *con = connection ? connection : "NULL";
if (strcmp(name, "all"))
{
fprintf(yyout, "{ ECPGdeallocate(__LINE__, %d, %s, ", compat, con);
output_escaped_str(name, true);
fputs(");", yyout);
}
else
fprintf(yyout, "{ ECPGdeallocate_all(__LINE__, %d, %s);", compat, con);
whenever_action(2);
free(name);
if (connection != NULL)
free(connection);
}
static void
output_escaped_str(char *str, bool quoted)
{
int i = 0;
int len = strlen(str);
if (quoted && str[0] == '\"' && str[len - 1] == '\"') /* do not escape quotes
* at beginning and end
* if quoted string */
{
i = 1;
len--;
fputs("\"", yyout);
}
/* output this char by char as we have to filter " and \n */
for (; i < len; i++)
{
if (str[i] == '"')
fputs("\\\"", yyout);
else if (str[i] == '\n')
fputs("\\\n", yyout);
else if (str[i] == '\\')
{
int j = i;
/* check whether this is a continuation line
* if it is, do not output anything because newlines are escaped anyway */
/* accept blanks after the '\' as some other compilers do too */
do { j++; } while (str[j] == ' ' || str[j] == '\t');
if ((str[j] != '\n') && (str[j] != '\r' || str[j + 1] != '\n')) /* not followed by a newline */
fputs("\\\\", yyout);
}
else if (str[i] == '\r' && str[i + 1] == '\n')
{
fputs("\\\r\n", yyout);
i++;
}
else
fputc(str[i], yyout);
}
if (quoted && str[0] == '\"' && str[len] == '\"')
fputs("\"", yyout);
}
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