rofi/lexer/theme-lexer.l

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%option nodefault noyywrap
%option nostdinit
%option nounput
%option never-interactive
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%option bison-locations
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%{
#include <stdio.h>
#include <glib.h>
#include <gio/gio.h>
#include <helper.h>
#include "rofi.h"
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#include "lexer/theme-parser.h"
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#define LOG_DOMAIN "Parser"
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int last_state = 0;
/**
* Type of Object to parse.
*/
typedef enum {
/** Parse a file */
PT_FILE,
/** Parse a string */
PT_STRING
} ParseType;
/**
* Parse object
*/
typedef struct _ParseObject {
/** Type */
ParseType type;
/** File pointer */
FILE *filein;
char *filename;
/** Length of string */
int str_len;
/** String */
const char *input_str;
/** Position in file */
YYLTYPE location;
} ParseObject;
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GList *imported_files = NULL;
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GList *prev_imported_files = NULL;
GQueue *file_queue = NULL;
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GQueue *queue = NULL;
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ParseObject *current = NULL;
static char * rofi_theme_parse_prepare_file ( const char *file, const char *parent_file );
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%}
%{
#define YY_INPUT(buf,result,max_size) \
{\
if ( current == NULL ) {\
result = 0;\
} else {\
switch ( current->type ) { \
case PT_FILE:\
{\
errno =0; \
while ( (result = (int) fread(buf, 1, max_size, current->filein))==0 && ferror(current->filein)) \
{ \
if( errno != EINTR) \
{ \
YY_FATAL_ERROR( "input in flex scanner failed" ); \
break; \
} \
errno=0; \
clearerr(current->filein); \
} \
break;\
}\
case PT_STRING:\
{\
yy_size_t len = MIN (max_size, current->str_len);\
if ( len > 0 ){\
memcpy (buf, current->input_str, len);\
current->input_str+=len;\
current->str_len-=len;\
result = len;\
} else {\
result = 0;\
}\
}\
}\
}\
}
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#define YY_USER_ACTION {\
yylloc->last_column+= yyleng;\
}
#define YY_LLOC_START {\
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yylloc->first_line = yylloc->last_line;\
yylloc->first_column = yylloc->last_column;\
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}
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%}
ASC [\x00-\x7f]
ASCN [\x00-\t\v-\x7f]
U [\x80-\xbf]
U2 [\xc2-\xdf]
U3 [\xe0-\xef]
U4 [\xf0-\xf4]
// UANY {ASC}|{U2}{U}|{U3}{U}{U}|{U4}{U}{U}{U}
UANYN {ASCN}|{U2}{U}|{U3}{U}{U}|{U4}{U}{U}{U}
// UONLY {U2}{U}|{U3}{U}{U}|{U4}{U}{U}{U}
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WHITESPACE [[:blank:]]
WORD [[:alnum:]-]+
STRING {UANYN}+
HEX [[:xdigit:]]
NUMBER [[:digit:]]
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PNNUMBER [-+]?[[:digit:]]+
REAL [-+]?[[:digit:]]+(\.[[:digit:]]+)?
PX (px)
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EM (em)
PERCENT (\%)
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ASTERIX \*
CENTER "center"
NORTH "north"
SOUTH "south"
EAST "east"
WEST "west"
NONE "none"
BOLD "bold"
UNDERLINE "underline"
ITALIC "italic"
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LS_DASH "dash"
LS_SOLID "solid"
INCLUDE "@import"
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CONFIGURATION "configuration"
%x INCLUDE
%x PROPERTIES
%x NAMESTR
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%x SECTION
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%x DEFAULTS
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%%
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%{
YY_LLOC_START
%}
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%{
if ( queue == NULL ){
queue = g_queue_new ( );
yylloc->filename = current->filename;
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// unsure why todo this.
yylloc->first_line = yylloc->last_line = 1;
yylloc->first_column = yylloc->last_column = 1;
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}
%}
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/**
* General code for handling comments.
* Both C and C++ style comments, including nexting.
*/
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<*>"//" {
int c = input();
while ( c != 0 && c != EOF){
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if (c == '\n') {
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yylloc->last_column = 1;
yylloc->last_line ++;
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break;
}
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yylloc->last_column++;
c = input();
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}
YY_LLOC_START
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}
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<*>"/*" {
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int c = 0, p;
int nesting_depth = 1;
while (nesting_depth) {
p = c;
c = input();
switch (c) {
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case '*': yylloc->last_column++; if (p == '/') { c = 0; nesting_depth++; } break;
case '/': yylloc->last_column++; if (p == '*') { c = 0; nesting_depth--; } break;
case '\n': {
yylloc->last_column = 1;
yylloc->last_line ++;
break;
}
case 0: nesting_depth = 0; break;
case EOF: nesting_depth = 0; break;
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default:
yylloc->last_column++;
;
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}
}
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YY_LLOC_START
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}
/**
* HANDLE INCLUDES
*/
<INITIAL>{INCLUDE} {
g_queue_push_head ( queue, GINT_TO_POINTER (YY_START) );
BEGIN(INCLUDE);
}
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/** Skip all whitespace */
<INCLUDE>{WHITESPACE} {}
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/** Parse path. Last element in this INCLUDE */
<INCLUDE>\"{STRING}\" {
yytext[yyleng-1] = '\0';
ParseObject *top = g_queue_peek_head ( file_queue );
g_assert ( top != NULL );
char *filename = rofi_theme_parse_prepare_file ( &yytext[1], top->filename );
if ( g_list_find_custom ( imported_files, filename, (GCompareFunc)g_strcmp0 ) != NULL ) {
g_log ( LOG_DOMAIN, G_LOG_LEVEL_DEBUG, "Skipping file: '%s' already parsed.", filename );
} else {
g_log ( LOG_DOMAIN, G_LOG_LEVEL_DEBUG, "Parsing file: '%s'", filename );
FILE *f = fopen ( filename, "rb" );
if ( f ) {
top->location = *yylloc;
ParseObject *po = g_malloc0(sizeof(ParseObject));
po->type = PT_FILE;
po->filename = filename;
po->filein = f;
current = po;
g_queue_push_head ( file_queue, po );
imported_files = g_list_append ( imported_files, po->filename );
yypush_buffer_state (yy_create_buffer ( 0, YY_BUF_SIZE ));
yylloc->first_line = yylloc->last_line = 1;
yylloc->first_column = yylloc->last_column = 1;
yylloc->filename = current->filename;
} else {
char *str = g_markup_printf_escaped ( "Failed to open theme: <i>%s</i>\nError: <b>%s</b>",
filename, strerror ( errno ) );
rofi_add_error_message ( g_string_new ( str ) );
g_free ( str );
g_free(filename);
}
}
// Pop out of include. */
BEGIN(GPOINTER_TO_INT(g_queue_pop_head ( queue )));
}
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/** Everythin not yet parsed is an error. */
<INCLUDE>. {
return T_ERROR_INCLUDE;
}
/**
* END INCLUDES
*/
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/**
* Handle defaults: * { ... }
*/
<INITIAL>{CONFIGURATION} {
g_queue_push_head ( queue, GINT_TO_POINTER (YY_START) );
BEGIN(DEFAULTS);
return CONFIGURATION;
}
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<INITIAL>{ASTERIX} {
g_queue_push_head ( queue, GINT_TO_POINTER (YY_START) );
BEGIN(DEFAULTS);
return PDEFAULTS;
}
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/** Skip all whitespace */
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<DEFAULTS>{WHITESPACE} {}
<DEFAULTS>"\{" {
g_queue_push_head ( queue, GINT_TO_POINTER (YY_START) );
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BEGIN(SECTION);
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return BOPEN;
}
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/** Everythin not yet parsed is an error. */
<DEFAULTS>. {
return T_ERROR_DEFAULTS;
}
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<INITIAL>"#" { g_queue_push_head ( queue, GINT_TO_POINTER (YY_START) ); BEGIN(NAMESTR);return NAME_PREFIX;}
/* Go into parsing an section*/
<NAMESTR>"\{" {
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g_queue_push_head ( queue, GINT_TO_POINTER (YY_START) );
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BEGIN(SECTION);
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return BOPEN;
}
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/* Pop out of parsing an section. */
<SECTION>"\}" {
g_queue_pop_head ( queue );
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BEGIN(GPOINTER_TO_INT(g_queue_pop_head ( queue )));
return BCLOSE;
}
<NAMESTR>\.|{WHITESPACE} { return NSEP; }
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<SECTION>{WORD} { yylval->sval = g_strdup(yytext); return N_STRING;}
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<NAMESTR>{WORD} { yylval->sval = g_strdup(yytext); return NAME_ELEMENT;}
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/* After Namestr/Classstr we want to go to state str, then to { */
<INITIAL,SECTION>{WHITESPACE}+ ; // ignore all whitespace
<PROPERTIES>{WHITESPACE}+ ; // ignore all whitespace
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<SECTION>":" { g_queue_push_head ( queue, GINT_TO_POINTER (YY_START) ); BEGIN(PROPERTIES); return PSEP; }
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<PROPERTIES>";" { BEGIN(GPOINTER_TO_INT ( g_queue_pop_head ( queue ))); return PCLOSE;}
<PROPERTIES>(true|false) { yylval->bval= g_strcmp0(yytext, "true") == 0; return T_BOOLEAN;}
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<PROPERTIES>{PNNUMBER} { yylval->ival = (int)g_ascii_strtoll(yytext, NULL, 10); return T_INT;}
<PROPERTIES>{PNNUMBER}\.{NUMBER}+ { yylval->fval = g_ascii_strtod(yytext, NULL); return T_DOUBLE;}
<PROPERTIES>\"{STRING}\" { yytext[yyleng-1] = '\0'; yylval->sval = g_strdup(&yytext[1]); return T_STRING;}
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<PROPERTIES>@{WORD} {
yylval->sval = g_strdup(yytext);
return T_LINK;
}
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<PROPERTIES>{REAL}{EM} {
yylval->distance.distance = (double)g_ascii_strtod(yytext, NULL);
yylval->distance.type = PW_EM;
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yylval->distance.style = SOLID;
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return T_PIXEL;
}
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<PROPERTIES>{PNNUMBER}{PX} {
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yylval->distance.distance = (double)g_ascii_strtoll(yytext, NULL, 10);
yylval->distance.type = PW_PX;
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yylval->distance.style = SOLID;
return T_PIXEL;
}
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<PROPERTIES>{PNNUMBER}{PX}{WHITESPACE}{LS_DASH} {
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yylval->distance.distance = (double)g_ascii_strtoll(yytext, NULL, 10);
yylval->distance.type = PW_PX;
yylval->distance.style = DASH;
return T_PIXEL;
}
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<PROPERTIES>{REAL}{EM}{WHITESPACE}{LS_DASH} {
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yylval->distance.distance = (double)g_ascii_strtoll(yytext, NULL, 10);
yylval->distance.type = PW_PX;
yylval->distance.style = DASH;
return T_PIXEL;
}
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<PROPERTIES>{PNNUMBER}{PX}{WHITESPACE}{LS_SOLID} {
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yylval->distance.distance = (double)g_ascii_strtoll(yytext, NULL, 10);
yylval->distance.type = PW_PX;
yylval->distance.style = SOLID;
return T_PIXEL;
}
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<PROPERTIES>{REAL}{EM}{WHITESPACE}{LS_SOLID} {
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yylval->distance.distance = (double)g_ascii_strtoll(yytext, NULL, 10);
yylval->distance.type = PW_PX;
yylval->distance.style = SOLID;
return T_PIXEL;
}
<PROPERTIES>{REAL}{PERCENT} {
yylval->distance.distance = (double)g_ascii_strtod(yytext, NULL);
yylval->distance.type = PW_PERCENT;
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yylval->distance.style = SOLID;
return T_PIXEL;
}
<PROPERTIES>{REAL}{PERCENT}{WHITESPACE}{LS_SOLID} {
yylval->distance.distance = (double)g_ascii_strtod(yytext, NULL);
yylval->distance.type = PW_PERCENT;
yylval->distance.style = SOLID;
return T_PIXEL;
}
<PROPERTIES>{REAL}{PERCENT}{WHITESPACE}{LS_DASH} {
yylval->distance.distance = (double)g_ascii_strtod(yytext, NULL);
yylval->distance.type = PW_PERCENT;
yylval->distance.style = DASH;
return T_PIXEL;
}
<PROPERTIES>#{HEX}{8} {
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union { unsigned int val; struct { unsigned char b,g,r,a;};} val;
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val.val = (unsigned int)strtoull ( &yytext[1], NULL, 16);
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yylval->colorval.alpha = val.a/255.0;
yylval->colorval.red = val.r/255.0;
yylval->colorval.green = val.g/255.0;
yylval->colorval.blue = val.b/255.0;
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return T_COLOR;
}
<PROPERTIES>#{HEX}{6} {
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union { unsigned int val; struct { unsigned char b,g,r,a;};} val;
val.val = (unsigned int)g_ascii_strtoull ( &yytext[1], NULL, 16);
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yylval->colorval.alpha = 1.0;
yylval->colorval.red = val.r/255.0;
yylval->colorval.green = val.g/255.0;
yylval->colorval.blue = val.b/255.0;
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return T_COLOR;
}
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<PROPERTIES>#{HEX}{3} {
union { uint16_t val; struct { unsigned char b:4,g:4,r:4,a :4;};} val;
val.val = (uint16_t )g_ascii_strtoull ( &yytext[1], NULL, 16);
yylval->colorval.alpha = 1.0;
yylval->colorval.red = val.r/16.0;
yylval->colorval.green = val.g/16.0;
yylval->colorval.blue = val.b/16.0;
return T_COLOR;
}
<PROPERTIES>rgba\({NUMBER}{1,3},{NUMBER}{1,3},{NUMBER}{1,3},[01](\.{NUMBER}+)?\) {
char *endptr = &yytext[5];
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yylval->colorval.red = g_ascii_strtoull ( endptr, &endptr, 10);
yylval->colorval.green= g_ascii_strtoull ( endptr+1, &endptr, 10);
yylval->colorval.blue= g_ascii_strtoull ( endptr+1, &endptr, 10);
yylval->colorval.alpha= g_ascii_strtod ( endptr+1, NULL);
return T_COLOR;
}
<PROPERTIES>rgb\({NUMBER}{1,3},{NUMBER}{1,3},{NUMBER}{1,3}\) {
char *endptr = &yytext[4];
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yylval->colorval.red = g_ascii_strtoull ( endptr, &endptr, 10);
yylval->colorval.green = g_ascii_strtoull ( endptr+1, &endptr, 10);
yylval->colorval.blue = g_ascii_strtoull ( endptr+1, &endptr, 10);
yylval->colorval.alpha = 1.0;
return T_COLOR;
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}
<PROPERTIES>argb:{HEX}{1,8} {
union { unsigned int val; struct { unsigned char b,g,r,a;};} val;
val.val = (unsigned int)strtoull ( &yytext[5], NULL, 16);
yylval->colorval.alpha = val.a/255.0;
yylval->colorval.red = val.r/255.0;
yylval->colorval.green = val.g/255.0;
yylval->colorval.blue = val.b/255.0;
return T_COLOR;
}
<PROPERTIES>{CENTER} {
yylval->ival = WL_CENTER;
return T_POSITION;
}
<PROPERTIES>{EAST} {
yylval->ival = WL_EAST;
return T_POSITION;
}
<PROPERTIES>{WEST} {
yylval->ival = WL_WEST;
return T_POSITION;
}
<PROPERTIES>{SOUTH}{EAST} {
yylval->ival = WL_SOUTH_EAST;
return T_POSITION;
}
<PROPERTIES>{SOUTH}{WEST} {
yylval->ival = WL_SOUTH_WEST;
return T_POSITION;
}
<PROPERTIES>{SOUTH} {
yylval->ival = WL_SOUTH;
return T_POSITION;
}
<PROPERTIES>{NORTH}{EAST} {
yylval->ival = WL_NORTH_EAST;
return T_POSITION;
}
<PROPERTIES>{NORTH}{WEST} {
yylval->ival = WL_NORTH_WEST;
return T_POSITION;
}
<PROPERTIES>{NORTH} {
yylval->ival = WL_NORTH;
return T_POSITION;
}
<PROPERTIES>{NONE} {
yylval->ival = HL_NONE;
return T_HIGHLIGHT_STYLE;
}
<PROPERTIES>{BOLD} {
yylval->ival = HL_BOLD;
return T_HIGHLIGHT_STYLE;
}
<PROPERTIES>{ITALIC} {
yylval->ival = HL_ITALIC;
return T_HIGHLIGHT_STYLE;
}
<PROPERTIES>{UNDERLINE} {
yylval->ival = HL_UNDERLINE;
return T_HIGHLIGHT_STYLE;
}
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<INITIAL><<EOF>> {
ParseObject *po = g_queue_pop_head ( file_queue );
if ( po ) {
if ( po->type == PT_FILE ){
fclose ( po->filein );
}
g_free ( po );
}
po = g_queue_peek_head ( file_queue );
if ( po == NULL ) {
g_queue_free ( queue );
// Reset pointer to NULL
queue = NULL;
yyterminate();
} else {
yypop_buffer_state();
current = po;
*yylloc = current->location;
BEGIN(GPOINTER_TO_INT ( g_queue_pop_head ( queue )));
}
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}
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<*>\n {
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yylloc->last_column = 1;
yylloc->last_line ++;
};
<*>(\r\n) {
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yylloc->last_column = 1;
yylloc->last_line ++;
};
<INITIAL>. {
return T_ERROR;
}
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<SECTION>. {
return T_ERROR_SECTION;
}
<PROPERTIES>. {
return T_ERROR_PROPERTY;
}
<NAMESTR>. {
return T_ERROR_NAMESTRING;
}
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%%
static char * rofi_theme_parse_prepare_file ( const char *file, const char *parent_file )
{
char *filename = rofi_expand_path ( file );
// If no absolute path specified, expand it.
if ( parent_file != NULL && ! g_path_is_absolute ( filename ) ) {
char *basedir = g_path_get_dirname ( parent_file );
char *path = g_build_filename ( basedir, filename, NULL );
g_free ( filename);
filename = path;
g_free ( basedir );
}
GFile *gf = g_file_new_for_path ( filename );
g_free(filename);
filename = g_file_get_path ( gf );
g_object_unref ( gf );
return filename;
}
gboolean rofi_theme_parse_file ( const char *file )
{
char *filename = rofi_theme_parse_prepare_file ( file, NULL );
yyin = fopen ( filename, "rb" );
if ( yyin == NULL ) {
char *str = g_markup_printf_escaped ( "Failed to open theme: <i>%s</i>\nError: <b>%s</b>",
filename, strerror ( errno ) );
rofi_add_error_message ( g_string_new ( str ) );
g_free ( str );
g_free ( filename );
return TRUE;
}
/** Add Parse object */
file_queue = g_queue_new ();
ParseObject *po = g_malloc0(sizeof(ParseObject));
po->type = PT_FILE;
po->filename = filename;
po->filein = yyin;
current = po;
imported_files = g_list_append ( imported_files, po->filename );
g_queue_push_head ( file_queue, po );
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g_log ( LOG_DOMAIN, G_LOG_LEVEL_DEBUG, "Parsing top file: '%s'", filename );
int parser_retv = yyparse ( file );
yylex_destroy ();
yyin = NULL;
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while ( (po = g_queue_pop_head ( file_queue ) )) {
if ( po ) {
if ( po->type == PT_FILE ){
fclose ( po->filein );
}
g_free ( po );
}
}
// Free up.
g_list_foreach ( imported_files, (GFunc)g_free, NULL);
g_list_free ( imported_files );
g_queue_free ( file_queue );
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imported_files = NULL;
file_queue = NULL;
if ( parser_retv != 0 ) {
return TRUE;
}
return FALSE;
}
gboolean rofi_theme_parse_string ( const char *string )
{
yyin = NULL;
/** Add Parse object */
file_queue = g_queue_new ();
ParseObject *po = g_malloc0(sizeof(ParseObject));
po->type = PT_STRING;
po->input_str = string;
po->str_len = strlen(string);
current = po;
g_queue_push_head ( file_queue, po );
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g_log ( LOG_DOMAIN, G_LOG_LEVEL_DEBUG, "Parsing string: '%s'", string );
int parser_retv = yyparse ( string );
yylex_destroy ();
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while ( (po = g_queue_pop_head ( file_queue ) )) {
if ( po ) {
if ( po->type == PT_FILE ){
fclose ( po->filein );
}
g_free ( po );
}
}
// Free up.
g_list_foreach ( imported_files, (GFunc)g_free, NULL);
g_list_free ( imported_files );
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imported_files = NULL;
g_queue_free ( file_queue );
file_queue = NULL;
if ( parser_retv != 0 ) {
return TRUE;
}
return FALSE;
}