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/* Copyright (C) 1999-2018
* Smithsonian Astrophysical Observatory, Cambridge, MA, USA
* For conditions of distribution and use, see copyright notice in "copyright"
*/
%option noyywrap
%option caseless
%option never-interactive
%option c++
%{
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include "util.h"
#include "enviparser.H"
extern YYSTYPE* envilval;
extern enviFlexLexer* envilexx;
%}
%x DISCARD
%x BRACKET
D [0-9]
E [Ee][+-]?{D}+
/* rules */
%%
<DISCARD>[\n] { // special case-- #\n
BEGIN INITIAL;
yyless(0); // put back the terminator
strcpy(envilval->str,""); // feed a blank string
return STRING;
}
<DISCARD>[^\n]* { // Discard reset of line
BEGIN INITIAL;
int ll = yyleng <(ENVIPARSERSIZE-1) ? yyleng:(ENVIPARSERSIZE-1);
strncpy(envilval->str,yytext,ll);
envilval->str[ll] = '\0';
return STRING;
}
\{ {
BEGIN BRACKET;
return '{';
}
<BRACKET>\} {
BEGIN INITIAL;
return '}';
}
debug {return DEBUG_;}
on {return ON_;}
off {return OFF_;}
average {return AVERAGE_;}
band {return BAND_;}
bands {return BANDS_;}
bbl {return BBL_;}
bil {return BIL_;}
bip {return BIP_;}
bsq {return BSQ_;}
byte {return BYTE_;}
envi {return ENVI_;}
data {return DATA_;}
default {return DEFAULT_;}
description {return DESCRIPTION_;}
factor {return FACTOR_;}
frame {return FRAME_;}
file {return FILE_;}
fwhm {return FWHM_;}
gain {return GAIN_;}
header {return HEADER_;}
info {return INFO_;}
ignore {return IGNORE_;}
interleave {return INTERLEAVE_;}
limits {return LIMITS_;}
lines {return LINES_;}
major {return MAJOR_;}
map {return MAP_;}
minor {return MINOR_;}
names {return NAMES_;}
offset {return OFFSET_;}
offsets {return OFFSETS_;}
order {return ORDER_;}
pixel {return PIXEL_;}
pixels {return PIXELS_;}
plot {return PLOT_;}
projection {return PROJECTION_;}
range {return RANGE_;}
reflectance {return REFLECTANCE_;}
samples {return SAMPLES_;}
scale {return SCALE_;}
scanner {return SCANNER_;}
sensor {return SENSOR_;}
size {return SIZE_;}
stretch {return STRETCH_;}
titles {return TITLES_;}
type {return TYPE_;}
units {return UNITS_;}
value {return VALUE_;}
values {return VALUES_;}
wavelength {return WAVELENGTH_;}
<BRACKET>[+-]?{D}+ { // Integer
envilval->integer = atoi(yytext);
return INT;
}
<BRACKET>[+-]?{D}+"."?({E})? |
<BRACKET>[+-]?{D}*"."{D}+({E})? { // Real Number
envilval->real = atof(yytext);
return REAL;
}
<BRACKET>[0-9A-Za-z\-]+ { // General String
int ll = yyleng <(ENVIPARSERSIZE-1) ? yyleng:(ENVIPARSERSIZE-1);
strncpy(envilval->str,yytext,ll);
envilval->str[ll] = '\0';
return STRING;
}
<BRACKET>, {
return ',';
}
<BRACKET>[ \t]+ { // White Spaces
}
<BRACKET>\n { // linefeed
}
<BRACKET>. { // other chars, eat it
}
[+-]?{D}+ { // Integer
envilval->integer = atoi(yytext);
return INT;
}
[+-]?{D}+"."?({E})? |
[+-]?{D}*"."{D}+({E})? { // Real Number
envilval->real = atof(yytext);
return REAL;
}
[0-9A-Za-z]+ { // General String
int ll = yyleng <(ENVIPARSERSIZE-1) ? yyleng:(ENVIPARSERSIZE-1);
strncpy(envilval->str,yytext,ll);
envilval->str[ll] = '\0';
return STRING;
}
[ \t]+ { // White Spaces
}
\r\n { // windows line feed
return '\n';
}
\n { // linefeed
return '\n';
}
<<EOF>> { // eof
return EOF_;
}
. { // Else, return the char
return yytext[0];
}
%%
void enviDiscard(int doit)
{
if (envilexx)
envilexx->begin(DISCARD, doit);
}
void enviFlexLexer::begin(int which, int doit)
{
BEGIN which;
if (doit)
yyless(0);
}
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