141 lines
3.2 KiB
C++
141 lines
3.2 KiB
C++
#ifndef _PARSER_H
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#define _PARSER_H
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#include <iostream>
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#include <string>
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#include "error.h"
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namespace ledger {
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class account_t;
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class journal_t;
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class config_t;
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class parser_t
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{
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public:
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virtual ~parser_t() {}
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virtual bool test(std::istream& in) const = 0;
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virtual unsigned int parse(std::istream& in,
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config_t& config,
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journal_t * journal,
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account_t * master = NULL,
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const std::string * original_file = NULL) = 0;
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};
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bool register_parser(parser_t * parser);
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bool unregister_parser(parser_t * parser);
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unsigned int parse_journal(std::istream& in,
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config_t& config,
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journal_t * journal,
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account_t * master = NULL,
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const std::string * original_file = NULL);
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unsigned int parse_journal_file(const std::string& path,
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config_t& config,
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journal_t * journal,
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account_t * master = NULL,
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const std::string * original_file = NULL);
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unsigned int parse_ledger_data(config_t& config,
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journal_t * journal,
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parser_t * cache_parser = NULL,
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parser_t * xml_parser = NULL,
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parser_t * stdin_parser = NULL);
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void initialize_parser_support();
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void shutdown_parser_support();
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class parse_error : public error {
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public:
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parse_error(const std::string& reason, error_context * ctxt = NULL) throw()
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: error(reason, ctxt) {}
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virtual ~parse_error() throw() {}
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};
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/************************************************************************
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*
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* General utility parsing functions
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*/
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inline char * skip_ws(char * ptr) {
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while (*ptr == ' ' || *ptr == '\t' || *ptr == '\n')
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ptr++;
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return ptr;
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}
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inline char * next_element(char * buf, bool variable = false) {
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for (char * p = buf; *p; p++) {
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if (! (*p == ' ' || *p == '\t'))
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continue;
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if (! variable) {
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*p = '\0';
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return skip_ws(p + 1);
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}
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else if (*p == '\t') {
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*p = '\0';
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return skip_ws(p + 1);
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}
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else if (*(p + 1) == ' ') {
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*p = '\0';
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return skip_ws(p + 2);
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}
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}
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return NULL;
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}
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inline char peek_next_nonws(std::istream& in) {
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char c = in.peek();
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while (! in.eof() && std::isspace(c)) {
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in.get(c);
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c = in.peek();
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}
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return c;
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}
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#define READ_INTO(str, targ, size, var, cond) { \
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char * _p = targ; \
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var = str.peek(); \
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while (! str.eof() && var != '\n' && (cond) && _p - targ < size) { \
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str.get(var); \
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if (str.eof()) \
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break; \
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if (var == '\\') { \
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str.get(var); \
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if (in.eof()) \
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break; \
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} \
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*_p++ = var; \
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var = str.peek(); \
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} \
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*_p = '\0'; \
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}
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#define READ_INTO_(str, targ, size, var, idx, cond) { \
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char * _p = targ; \
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var = str.peek(); \
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while (! str.eof() && var != '\n' && (cond) && _p - targ < size) { \
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str.get(var); \
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if (str.eof()) \
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break; \
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idx++; \
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if (var == '\\') { \
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str.get(var); \
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if (in.eof()) \
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break; \
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idx++; \
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} \
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*_p++ = var; \
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var = str.peek(); \
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} \
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*_p = '\0'; \
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}
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} // namespace ledger
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#endif // _PARSER_H
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