Any help please?
On Fri, 2013-03-29 at 22:01 +0000, Rudra Banerjee wrote:
> I want to parse a bibtex file using flex and bison, and will display
> those data using gtk library(in C). The lexer is
>
> %{
> #include "bib.tab.h"
> %}
>
> %%
> [A-Za-z][A-Za-z0-9]* { yylval.sval = strdup(yytext); return KEY; }
> \"([^\"]|\\.)*\"|\{([^\"]|\\.)*\} { yylval.sval = strdup(yytext); return
> VALUE; }
> [ \t\n] ; /* ignore whitespace */
> [{}@=,] { return *yytext; }
> . { fprintf(stderr, "Unrecognized character %c in
> input\n", *yytext); }
> %%
>
> and the parser is:
>
> %{
> #include <stdio.h>
> #include <glib.h>
> #include <gtk/gtk.h>
> #include <string.h>
> #include <glib/gstdio.h>
> #include <fcntl.h>
> enum
> {
> COL_BIB_KEY=0,
> COL_BIB_TYPE, COL_BIB_AUTHOR, COL_BIB_YEAR,
> NUM_COLS} ;
> #define slen 1024
> GHashTable* table;
> GtkTreeIter siter;
> GtkListStore *store;
> %}
>
> // Symbols.
> %union
> {
> char *sval;
> };
> %token <sval> VALUE
> %token <sval> KEY
> %token OBRACE
> %token EBRACE
> %token QUOTE
> %token SEMICOLON
>
> %start Input
> %%
> Input:
> /* empty */
> | Input Entry ; /* input is zero or more entires */
> Entry:
> '@' KEY '{' KEY ','{ g_hash_table_insert(table, g_strdup("TYPE"),
> g_strdup($2));
> g_hash_table_insert(table, g_strdup("ID"), g_strdup($4));
> g_printf("%s:%s\n","KEY=>",g_hash_table_lookup(table,"TYPE"));
> // g_printf("%s: %s\n", $2, $4);
> }
> KeyVals '}'
> ;
> KeyVals:
> /* empty */
> | KeyVals KeyVal ; /* zero or more keyvals */
> KeyVal:
> KEY '=' VALUE ',' { g_hash_table_insert(table, g_strdup($1),
> g_strdup($3));
> // g_printf("%s: %s\n", $1, $3);
> };
>
> %%
>
> int yyerror(char *s) {
> printf("yyerror : %s\n",s);
> }
>
> int main(int argc, char** argv) {
> gtk_init(&argc, &argv);
> GtkWidget *window = gtk_window_new (GTK_WINDOW_TOPLEVEL);
> GtkWidget *tree=gtk_tree_view_new();
> setup_tree(tree);
>
> gtk_container_add (GTK_CONTAINER (window), tree);
> store= gtk_list_store_new (NUM_COLS,
> G_TYPE_STRING, G_TYPE_STRING, G_TYPE_STRING, G_TYPE_STRING);
> table = g_hash_table_new(g_str_hash, g_str_equal);
> gint i;
> do{
> g_hash_table_remove_all (table);
> yyparse();
> parse_entry (table);
> gtk_tree_view_set_model (GTK_TREE_VIEW (tree), GTK_TREE_MODEL (store));
> g_object_unref (store);
> }
> while(!EOF);
> g_hash_table_destroy (table);
> gtk_widget_show_all (window);
> gtk_main ();
> return 0;
> }
> void parse_entry (GHashTable *table)
> {
> GHashTableIter iter;
> gchar *key, *val;
> char *keys[] = {"id", "type", "author", "year", "title", "publisher",
> "editor",
> "volume", "number", "pages", "month", "note", "address", "edition",
> "journal",
> "series", "book", "chapter", "organization", NULL};
> char *vals[] = {NULL, NULL, NULL, NULL, NULL,
> NULL, NULL, NULL, NULL, NULL,
> NULL, NULL, NULL, NULL, NULL,
> NULL, NULL, NULL, NULL, NULL};
>
> gchar **kiter;
> gint i;
> g_hash_table_iter_init (&iter, table);
> while (g_hash_table_iter_next (&iter, (void **)&key, (void **)&val))
> {
> for (kiter = keys, i = 0; *kiter; kiter++, i++)
> {
> if (!g_ascii_strcasecmp(*kiter, key))
> {
> vals[i] = g_strndup(val,slen);
> // g_printf("%s:%s\n",keys[i],g_hash_table_lookup(table,keys[i]));
> g_printf("%d=>%s:%s\n",i,keys[i],vals[i]);
> break;
> }
> }
> }
> gtk_list_store_append (store, &siter);
> gtk_list_store_set (store, &siter,
> COL_BIB_TYPE, vals[COL_BIB_TYPE],
> COL_BIB_KEY, vals[COL_BIB_KEY],
> COL_BIB_AUTHOR, vals[COL_BIB_AUTHOR],
> COL_BIB_YEAR, vals[COL_BIB_YEAR],
> -1);
> }
>
> void setup_tree(GtkWidget *tree){
> GtkCellRenderer *renderer;
> GtkTreeViewColumn *column;
>
> renderer = gtk_cell_renderer_text_new ();
> column = gtk_tree_view_column_new_with_attributes
> ("Type", renderer, "text",COL_BIB_TYPE , NULL);
> gtk_tree_view_append_column (GTK_TREE_VIEW (tree), column);
> renderer = gtk_cell_renderer_text_new ();
> column = gtk_tree_view_column_new_with_attributes
> ("Author", renderer, "text", COL_BIB_AUTHOR, NULL);
> gtk_tree_view_append_column (GTK_TREE_VIEW (tree), column);
> renderer = gtk_cell_renderer_text_new ();
> column = gtk_tree_view_column_new_with_attributes
> ("Year", renderer, "text",COL_BIB_YEAR, NULL);
> gtk_tree_view_append_column (GTK_TREE_VIEW (tree), column);
> g_printf("HIIIIIIIIIi");
> }
>
> The problem is on populating the hash table, and not the listview(I
> enclosed the list store so that people can see my final goal and suggest
> improvements.)
> If we put the line
>
> g_printf("%s:%s\n",$1,g_hash_table_lookup(table,$1));
>
> at line number 50, it prints the hash table's content correctly, but if
> we want the content by uncommenting line number 105, then only the last
> entry is parsed. So, my guess is I am not processing the hash file
> correctly (line no 97-107 may be?)
>
> The makefile is:
>
> CC=gcc -g
> FLEX=flex
> BISON=bison
> LIBS=lfl
> PROG=parse
>
> ${PROG}:bib.y bib.l
> ${BISON} -d bib.y
> ${FLEX} -i bib.l
> ${CC} lex.yy.c bib.tab.c `pkg-config --cflags --libs glib-2.0``pkg-config
> --cflags --libs gtk+-3.0` -${LIBS} -o $@
>
> clean:
> rm -f lex.yy.c bib.tab.c ${PROG}
> touch bib.l bib.y
>
> and a sample bibtex file is:
>
> @Book{a1,
> Title="ASR",
> Publisher="oxf",
> author = "a {\"m}ook, Rudra Banerjee",
> Year="2010",
> Address="UK",
> Edition="1",
> }
> @Booklet{ab19,
> Author="Rudra Banerjee and A. Mookerjee",
> Title="Fe{\"Ni}Mo",
> Editor="sm1",
> Title="sm2",
> Publisher="sm3",
> Volume="sm4",
> Number="sm5",
> Pages="sm6",
> Month="sm8",
> Note="sm9",
> Key="sm10",
> Year="1980",
> Address="osm1",
> Edition="osm2",
> }
>
> I will be grateful if someone shows me some way to populate the
> hashtable correctly. Please help.
>
>
>
> _______________________________________________
> gtk-app-devel-list mailing list
> gtk-app-devel-list@gnome.org
> https://mail.gnome.org/mailman/listinfo/gtk-app-devel-list
_______________________________________________
gtk-app-devel-list mailing list
gtk-app-devel-list@gnome.org
https://mail.gnome.org/mailman/listinfo/gtk-app-devel-list
