// It can be used for simple syntax parsers, like lyxrc,
// texclass and others to come. [asierra30/03/96]
//
-// (C) 1996 Lyx Team.
+// Copyright 1996 Lyx Team.
#include <config.h>
-#include <cstdlib>
-
#ifdef __GNUG__
#pragma implementation "lyxlex.h"
#endif
#include "lyxlex.h"
-#include "debug.h"
+#include "lyxlex_pimpl.h"
#include "support/filetools.h"
+using std::ostream;
+using std::istream;
+using std::endl;
+
+
LyXLex::LyXLex(keyword_item * tab, int num)
- : table(tab), no_items(num)
+ : pimpl_(new Pimpl(tab, num))
+{}
+
+
+LyXLex::~LyXLex()
{
- file = 0;
- owns_file = false;
- status = 0;
- pushed = 0;
+ delete pimpl_;
+}
+
+
+bool LyXLex::IsOK() const
+{
+ return pimpl_->is.good();
+}
+
+
+void LyXLex::setLineNo(int l)
+{
+ pimpl_->lineno = l;
+}
+
+
+int LyXLex::GetLineNo() const
+{
+ return pimpl_->lineno;
+}
+
+char const * LyXLex::text() const
+{
+ return &pimpl_->buff[0];
+}
+
+
+std::istream & LyXLex::getStream()
+{
+ return pimpl_->is;
}
void LyXLex::pushTable(keyword_item * tab, int num)
{
- pushed_table * tmppu = new pushed_table;
- tmppu->next = pushed;
- tmppu->table_elem = table;
- tmppu->table_siz = no_items;
- pushed = tmppu;
- table = tab;
- no_items = num;
+ pimpl_->pushTable(tab, num);
}
void LyXLex::popTable()
{
- if (pushed == 0)
- lyxerr << "LyXLex error: nothing to pop!" << endl;
-
- pushed_table * tmp;
- tmp = pushed;
- table = tmp->table_elem;
- no_items = tmp->table_siz;
- tmp->table_elem = 0;
- pushed = tmp->next;
- delete tmp;
+ pimpl_->popTable();
}
-void LyXLex::printTable()
+void LyXLex::printTable(ostream & os)
{
- lyxerr << "\nNumber of tags: " << no_items << endl;
- for(int i=0; i<no_items; i++)
- lyxerr << "table[" << i
- << "]: tag: `" << table[i].tag
- << "' code:" << table[i].code << endl;
- lyxerr << endl;
+ pimpl_->printTable(os);
}
-void LyXLex::printError(string const & message)
+void LyXLex::printError(string const & message) const
{
- string tmpmsg = subst(message, "$$Token", GetString());
- lyxerr << "LyX: " << tmpmsg << " [around line " << lineno
- << " of file " << MakeDisplayPath(name) << ']' << endl;
+ pimpl_->printError(message);
}
bool LyXLex::setFile(string const & filename)
{
- if (file)
- lyxerr << "Error in LyXLex::setFile: file already set." <<endl;
- file = fopen(filename.c_str(), "r");
- name = filename;
- owns_file = true;
- lineno = 0;
- return (file ? true : false);
+ return pimpl_->setFile(filename);
}
-void LyXLex::setFile(FILE * f)
+void LyXLex::setStream(istream & i)
{
- if (file)
- lyxerr << "Error in LyXLex::setFile: file already set." << endl;
- file = f;
- owns_file = false;
- lineno = 0; // this is bogus if the file already has been read from
+ pimpl_->setStream(i);
}
int LyXLex::lex()
{
- //NOTE: possible bug.
- if (next() && status==LEX_TOKEN)
- return search_kw(buff);
- else
- return status;
+ return pimpl_->lex();
}
-int LyXLex::GetInteger()
+int LyXLex::GetInteger() const
{
- if (buff[0]>' ')
- return atoi(buff);
- else {
- printError("Bad integer `$$Token'");
- return -1;
- }
+ if (pimpl_->buff[0] > ' ')
+ return atoi(pimpl_->buff);
+ else {
+ pimpl_->printError("Bad integer `$$Token'");
+ return -1;
+ }
}
-float LyXLex::GetFloat()
+float LyXLex::GetFloat() const
{
- if (buff[0]>' ')
- return (float)strtod(buff, (char**)0);
+ if (pimpl_->buff[0] > ' ')
+ return atof(pimpl_->buff);
else {
- printError("Bad float `$$Token'");
+ pimpl_->printError("Bad float `$$Token'");
return -1;
}
}
-string LyXLex::GetString() const
+string const LyXLex::GetString() const
{
- return string(buff);
+ return pimpl_->GetString();
}
}
-bool LyXLex::GetBool()
+bool LyXLex::GetBool() const
{
- if (compare(buff, "true") == 0)
- return true;
- else if (compare(buff, "false") != 0)
- printError("Bad boolean `$$Token'. Use \"false\" or \"true\"");
- return false;
-}
-
-
-bool LyXLex::EatLine()
-{
- int i=0;
- int c = '\0'; // getc() returns an int
-
- while (!feof(file) && c!='\n' && i!=(LEX_MAX_BUFF-1)) {
- c = getc(file);
- if (c != '\r')
- buff[i++] = c;
- }
- if (i==(LEX_MAX_BUFF-1) && c !='\n') {
- printError("Line too long");
- c = '\n'; // Pretend we had an end of line
- --lineno; // but don't increase line counter (netto effect)
- ++i; // and preserve last character read.
- }
- if (c=='\n') {
- ++lineno;
- buff[--i] = '\0'; // i can never be 0 here, so no danger
- status = LEX_DATA;
+ if (compare(pimpl_->buff, "true") == 0)
return true;
- } else {
- buff[i] = '\0';
- return false;
- }
+ else if (compare(pimpl_->buff, "false") != 0)
+ pimpl_->printError("Bad boolean `$$Token'. Use \"false\" or \"true\"");
+ return false;
}
-int LyXLex::search_kw(char const * const tag) const
+bool LyXLex::EatLine()
{
- int m, k=0 , l= 0, r=no_items;
-
- while (l < r) {
- m = (l+r)/2;
-
- if (lyxerr.debugging(Debug::PARSER)) {
- lyxerr << "LyXLex::search_kw: elem " << m
- << " tag " << table[m].tag
- << " search tag " << tag
- << endl;
- }
-
- if (table[m].tag)
- k = compare_no_case(table[m].tag, tag);
- if (k==0)
- return table[m].code;
- else
- if (k<0) l = m+1; else r = m;
- }
- return -1;
+ return pimpl_->EatLine();
}
bool LyXLex::next(bool esc)
{
-
- if (!esc) {
- int c; // getc() returns an int
- //int i;
-
-
- status = 0;
- while (!feof(file) && !status) {
- c = getc(file);
- if (c=='#') {
- // Read rest of line (fast :-)
- fgets(buff, sizeof(buff), file);
- ++lineno;
- continue;
- }
-
- if (c=='\"') {
- int i = -1;
- do {
- c = getc(file);
- if (c != '\r')
- buff[++i] = c;
- } while (c!='\"' && c!='\n' && !feof(file) &&
- i!=(LEX_MAX_BUFF-2));
-
- if (i==(LEX_MAX_BUFF-2)) {
- printError("Line too long");
- c = '\"'; // Pretend we got a "
- ++i;
- }
-
- if (c!='\"') {
- printError("Missing quote");
- if (c=='\n')
- ++lineno;
- }
-
- buff[i] = '\0';
- status = LEX_DATA;
- break;
- }
-
- if (c==',')
- continue; /* Skip ','s */
-
- if (c > ' ' && !feof(file)) {
- int i = 0;
- do {
- buff[i++] = c;
- c = getc(file);
- } while (c > ' ' && c != ',' && !feof(file) &&
- (i != LEX_MAX_BUFF-1) );
- if (i == LEX_MAX_BUFF-1) {
- printError("Line too long");
- }
- buff[i] = '\0';
- status = LEX_TOKEN;
- }
-
- if (c== '\r' && !feof(file)) {
- // The Windows support has lead to the
- // possibility of "\r\n" at the end of
- // a line. This will stop LyX choking
- // when it expected to find a '\n'
- c = getc(file);
- }
-
- if (c=='\n')
- ++lineno;
-
- }
- if (status) return true;
-
- status = (feof(file)) ? LEX_FEOF: LEX_UNDEF;
- buff[0] = '\0';
- return false;
- } else {
- int c; // getc() returns an int
- //int i;
-
-
- status = 0;
- while (!feof(file) && !status) {
- c = getc(file);
-
- // skip ','s
- if (c==',') continue;
-
- if (c=='\\') {
- // escape
- int i = 0;
- do {
- if (c == '\\') {
- // escape the next char
- c = getc(file);
- }
- buff[i++] = c;
- c = getc(file);
- } while (c > ' ' && c != ',' && !feof(file) &&
- (i != LEX_MAX_BUFF-1) );
- if (i == LEX_MAX_BUFF-1) {
- printError("Line too long");
- }
- buff[i] = '\0';
- status = LEX_TOKEN;
- continue;
- }
-
- if (c=='#') {
- // Read rest of line (fast :-)
- fgets(buff, sizeof(buff), file);
- ++lineno;
- continue;
- }
-
- // string
- if (c=='\"') {
- int i = -1;
- bool escaped = false;
- do {
- escaped = false;
- c = getc(file);
- if (c == '\r') continue;
- if (c == '\\') {
- // escape the next char
- c = getc(file);
- escaped = true;
- }
- buff[++i] = c;
-
- if (!escaped && c == '\"') break;
- } while (c!='\n' && !feof(file) &&
- i!=(LEX_MAX_BUFF-2));
-
- if (i==(LEX_MAX_BUFF-2)) {
- printError("Line too long");
- c = '\"'; // Pretend we got a "
- ++i;
- }
-
- if (c!='\"') {
- printError("Missing quote");
- if (c=='\n')
- ++lineno;
- }
-
- buff[i] = '\0';
- status = LEX_DATA;
- break;
- }
-
- if (c > ' ' && !feof(file)) {
- int i = 0;
- do {
- if (c == '\\') {
- // escape the next char
- c = getc(file);
- //escaped = true;
- }
- buff[i++] = c;
- c = getc(file);
- } while (c > ' ' && c != ',' && !feof(file) &&
- (i != LEX_MAX_BUFF-1) );
- if (i == LEX_MAX_BUFF-1) {
- printError("Line too long");
- }
- buff[i] = '\0';
- status = LEX_TOKEN;
- }
-
- // new line
- if (c=='\n')
- ++lineno;
- }
-
- if (status) return true;
-
- status = (feof(file)) ? LEX_FEOF: LEX_UNDEF;
- buff[0] = '\0';
- return false;
- }
+ return pimpl_->next(esc);
}
bool LyXLex::nextToken()
{
- int c; // getc() returns an int
- int i;
-
- status = 0;
- while (!feof(file) && !status) {
- c = getc(file);
-
- if (c >= ' ' && !feof(file)) {
- i = 0;
- if (c == '\\') { // first char == '\\'
- do {
- buff[i++] = c;
- c = getc(file);
- } while (c > ' ' && c != '\\' && !feof(file) &&
- i != (LEX_MAX_BUFF-1));
- } else {
- do {
- buff[i++] = c;
- c = getc(file);
- } while (c >= ' ' && c != '\\' && !feof(file)
- && i != (LEX_MAX_BUFF-1));
- }
-
- if (i == (LEX_MAX_BUFF-1)) {
- printError("Line too long");
- }
-
- if (c == '\\') ungetc(c,file); // put it back
- buff[i] = '\0';
- status = LEX_TOKEN;
- }
-
- if (c=='\n')
- ++lineno;
-
- }
- if (status) return true;
-
- status = (feof(file)) ? LEX_FEOF: LEX_UNDEF;
- buff[0] = '\0';
- return false;
+ return pimpl_->nextToken();
}
int i = -1;
if (next()) {
- if (compare(buff, "default")) {
- for (i = 0; str[i][0] && compare(str[i], buff); ++i);
+ if (compare(pimpl_->buff, "default")) {
+ for (i = 0; str[i][0] && compare(str[i], pimpl_->buff); ++i);
if (!str[i][0]) {
- printError("Unknown argument `$$Token'");
+ pimpl_->printError("Unknown argument `$$Token'");
i = -1;
}
}
} else
- printError("file ended while scanning string token");
+ pimpl_->printError("file ended while scanning string token");
return i;
}
{
int i = -1;
- if (compare(buff, "default")) {
- for (i = 0; str[i][0] && compare(str[i], buff); i++);
+ if (compare(pimpl_->buff, "default")) {
+ for (i = 0; str[i][0] && compare(str[i], pimpl_->buff); ++i);
if (!str[i][0]) {
if (print_error)
- printError("Unknown argument `$$Token'");
+ pimpl_->printError("Unknown argument `$$Token'");
i = -1;
}
}
projects / lyx.git / blobdiff