C到CPP的注释转换

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connver_comment.h

#ifndef _CONNVER_COMMENT_H_#define _CONNVER_COMMENT_H_#define INPUTFILE "input.txt"#define OUTPUTFILE "output.txt"enum{CSTATUS,CPPSTATUS,NULLSTATUS,EOFSTATUS};void connver_main();void do_null_status();void do_c_status();void do_cpp_status();static void conver_work();#endif

connver_comment.c

#include<stdio.h>#include<stdlib.h>#include"connver_comment.h"int status=NULLSTATUS;void do_null_status(FILE *ifp,FILE *ofp){int c = fgetc(ifp);if(c==EOF){status=EOFSTATUS;return;}else if(c=='/'){c = fgetc(ifp);if(c==EOF){fputc('/',ofp);status=EOFSTATUS;return;}else if(c=='*'){status=CSTATUS;fputc('/',ofp);fputc('/',ofp);return;}else if(c=='/'){status=CPPSTATUS;fputc('/',ofp);fputc('/',ofp);return;}else{fputc('/',ofp);fputc(c,ofp);return;}}fputc(c,ofp);};void do_c_status(FILE *ifp,FILE *ofp){int c = fgetc(ifp);if(c==EOF){status=EOFSTATUS;return;}else if(c=='*'){c = fgetc(ifp);if(c==EOF){status=EOFSTATUS;fputc('*',ofp);return;}else if(c=='/'){status=NULLSTATUS;fputc('\n',ofp);return;}else{fputc('*',ofp);ungetc(c,ifp); }return;}else if(c=='\n'){fputc('\n',ofp);fputc('/',ofp);fputc('/',ofp);return;}else{fputc(c,ofp);}};void do_cpp_status(FILE *ifp,FILE *ofp){int c=fgetc(ifp);if(c==EOF){status=EOFSTATUS;return;}else if(c=='\n'){fputc('\n',ofp);status=NULLSTATUS;return;}else{fputc(c,ofp);}};static void conver_work(FILE *ifp,FILE *ofp){while(status!=EOFSTATUS){switch(status){case NULLSTATUS:do_null_status(ifp,ofp);break;case CSTATUS:do_c_status(ifp,ofp);break;case CPPSTATUS:do_cpp_status(ifp,ofp);break;default:break;}}}void connver_main(){FILE *ifp = fopen(INPUTFILE,"r");FILE *ofp = fopen(OUTPUTFILE,"w");if(NULL==ifp||NULL==ofp){perror("open:");}conver_work(ifp,ofp);fclose(ifp);fclose(ofp);}

test.c

#include"connver_comment.h"int main(){connver_main();return 0;}

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