2015年1月27日 星期二

[C] How to make html file to report status

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/* va_start example */
#include <stdio.h>      /* printf */
#include <stdarg.h>     /* va_list, va_start, va_arg, va_end */
#include <string.h>     /* strdup - duplicate a string */
#include <stdlib.h>     /* exit(0) */

#define HTMLFILE_DEF "./ipband.html"
char   *htmlfname_m;             /* HTML report output file */

/* HTML reports */
void html_report(char *cp,...) {

        va_list va;
        static FILE     *htmlfile;      /* static to persist across calls */

        if (!cp) {      /* Cleanup when called with NULL format string */
                if (htmlfile) {
                                if (htmlfile != stdout) {
                                        fclose(htmlfile);
                                }
                                htmlfile = NULL;
                        }
        } else {                /* Get handles and print */

                if (!htmlfile) {

                        if (! htmlfname_m) {
                                htmlfname_m = strdup(HTMLFILE_DEF);
                        }

                        if (strcmp("-",htmlfname_m)) {
                                htmlfile = fopen (htmlfname_m, "w");
                        } else {
                                htmlfile = stdout;
                        }

                        if (NULL==htmlfile) {
                                fprintf(stderr,"ERROR:  Cannot open output file <%s>\n", htmlfname_m);
                                exit(0);
                        }
                }

                va_start(va,cp);

                if (htmlfile) {
                        vfprintf(htmlfile,cp,va);

                }

                va_end(va);
        }       
} 

int main ()
{
  html_report("<html>\n");
  return 0;
}


Report:
Produce ipband.html


Reference:
1.enter link description here

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