最近在看flex
首选就是直接 info flex
一大段的英文暂且不说，先说说里面的Indices
我想让company能够直接引用index里面的数据
不知道有没有相应的company-xxxxxx，能直接分析info文件 然后存储到sqlite或直接用.el文件保存数据 最后作为company-xxxxxx的数据源
其实我想得到的glic中的info补全
没有人回答呦 ， 那我就 “自问自答” 吧
通过 info flex > flex.txt 得到flex的内容 （我还不敢直接分析flex.info）
可以发现 \nFile: 的下一个非空白行就是一章的标题 下一行一定是*{1…}
先用flex得到标题再说吧
#include <string.h>
%x chapter
%x preindex
%x index
%%
int line_num = 1;
char pre_name [180];
<INITIAL,index>\nFile:[^\n]* { // printf(" ship 0 on line %d:%s",line_num++,yytext);
line_num++;
BEGIN(chapter);
}
<chapter>\n[a-zA-Z0-9][^\n]+ {
printf("\n catch chapter at line %d:%s",++line_num,yytext+1);
// save the name for check
memcpy(pre_name, yytext+1,strlen(yytext));
}
<chapter>\n"*"+[^\n]* { line_num ++;
// printf("\n return init at %d",line_num++);
BEGIN(0);
}
<chapter>\n"="+[^\n]* { line_num ++;
// printf("\n return init at %d",line_num++);
// if name contains index begin(preindex);
char * pos = NULL;
if((pos=strchr(pre_name,'I'))!=NULL){
if(*(pos+1)=='n' && *(pos+2)=='d'
&& *(pos+3)=='e' && *(pos+4)=='x'){
BEGIN(preindex);
}
else{BEGIN(0);}
}else{ BEGIN(0); }
}
<chapter>\n"-"+[^\n]* { line_num ++;
// printf("\n return init at %d",line_num++);
BEGIN(0);
}
<chapter>\n"."+[^\n]* { line_num ++;
// printf("\n return init at %d",line_num++);
BEGIN(0);
}
<chapter>\n {
// printf("\n space line at %d:",line_num);
line_num++;
}
<preindex>\n"* "Menu:[^\n]* { ++line_num;
// printf("\ninto index at line %d:%s",line_num,yytext+1);
BEGIN(index);
}
<preindex>\n[^\n]* {
++ line_num;
// printf("\n not match preindex at %d:%s",line_num,yytext);
}
<index>\n"*"[^\n]+ { ++line_num;
printf("\n %d:%s:%s",line_num, pre_name,yytext+1);
}
<index>\n" "+"(line"[^\n]* { line_num ++;
// printf("\n skip (line xxx) at %d",line_num);
}
<index>\n { line_num++;
// printf("\n index space line at %d:",line_num);
}
[^\n] /*skip*/
\n[^\n]* {
++ line_num;
/* printf("\n not match line at %d:%s",line_num,yytext); ++line_num;*/
}
可以执行了
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#include <string.h>
#include <stdlib.h>
char * quote(char * pre){
int len = strlen(pre);
char * new_point = malloc(len * 2);
int j = 0; int i = 0;
for(i = 0;i<len;i++){
if(pre[i] != '\''){
new_point[j] = pre[i];
j++;
}else{
new_point[j] = '\'';
new_point[j+1] ='\'';
j++;j++;
}
}
new_point[j] = 0;
new_point[j+1] = 0;
return new_point ;
}
%x chapter
%x preindex
%x index
%x index_name
%x index_descript
%x index_descript_space
%%
int line_num = 1;
char pre_name [180];
<INITIAL,index>\nFile:[^\n]* {
line_num++;
BEGIN(chapter);
}
<chapter>\n[a-zA-Z0-9][^\n]+ {
char * text = quote(yytext+1);
printf("\ninsert into flex_topic values('%s');",text);
memcpy(pre_name, text,strlen(text));
pre_name[strlen(text)] = 0;
free(text);
}
<chapter>\n"*"+[^\n]* { line_num ++;
BEGIN(0);
}
<chapter>\n"="+[^\n]* { line_num ++;
char * pos = NULL;
if((pos=strchr(pre_name,'I'))!=NULL){
if(*(pos+1)=='n' && *(pos+2)=='d'
&& *(pos+3)=='e' && *(pos+4)=='x'){
BEGIN(preindex);
}
else{BEGIN(0);}
}else{ BEGIN(0); }
}
<chapter>\n"-"+[^\n]* { line_num ++;
BEGIN(0);
}
<chapter>\n"."+[^\n]* { line_num ++;
BEGIN(0);
}
<chapter>\n {
line_num++;
}
<preindex>\n"* "Menu:[^\n]* { ++line_num;
BEGIN(index);
}
<preindex>\n[^\n]* {
++ line_num;
}
<index>\n"* " { ++line_num;
BEGIN(index_name);
}
<index>\n" "+"(line"[^\n]* { line_num ++;
}
<index>\n { line_num++;
}
<index_name>[^:]+ {
char * text = quote(yytext);
printf("\ninsert into flex_index values('%s','%s',",
text,pre_name);
free(text);
}
<index_name>":"[\s\t]* {
// printf(" : ");
BEGIN(index_descript_space);
}
<index_descript_space>. {
int c;
for ( ; ; ){
while ( (c = input()) == ' ' || c == '\t' );
if ( c != ' ' && c != '\t' ) {
unput(c);
break;
}
}
BEGIN(index_descript);
}
<index_descript>[^.]+ {
char * text = quote(yytext);
printf("'%s');",text);
free(text);
}
<index_descript>"." {
int c;
for ( ; ; ){
while ( (c = input()) != '\n' && c != EOF );
if ( c == '\n' ) {
unput('\n');
break;
}
if ( c == EOF ) {
break;
}
}
BEGIN(index);
}
[^\n] /*skip*/
\n[^\n]* {
++ line_num;
}
自动的导出 sqlite3 的语句
Makefile 如下
test: a.out flex.txt
cat flex.txt | ./a.out
flex.txt:
info flex > flex.txt
a.out: lex.yy.c
gcc lex.yy.c -lfl
lex.yy.c : flex.l
flex flex.l
Sqlite3 的表
PRAGMA foreign_keys=OFF;
BEGIN TRANSACTION;
CREATE TABLE flex_topic (topic text);
CREATE TABLE flex_index (name text,index_name text, describe text);
insert into flex_topic values('1 Copyright');
insert into flex_topic values('2 Reporting Bugs');
insert into flex_index values('yywrap','Index of Scanner Options','Options Affe\
cting Scanner Behavior');
COMMIT;
查询很简单
下一步 ： company-backends