773 lines
19 KiB
C
773 lines
19 KiB
C
/*---------------------------------------------------------------------------
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logger.c
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Markus Zolliker, Sept 2004
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----------------------------------------------------------------------------
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*/
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#include <stdio.h>
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#include <stdlib.h>
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#include <sys/stat.h>
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#include <sys/types.h>
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#include <assert.h>
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#include <fortify.h>
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#include <errno.h>
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#include <ctype.h>
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#include <dirent.h>
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#include "splitter.h"
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#include "logger.h"
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#ifndef TECS_LOG
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#include "sics.h"
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#endif
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#define LOGGER_NAN -999999.
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#define ONE_YEAR (366*24*3600)
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struct Logger {
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char *name;
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char *old;
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int oldsize;
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int period;
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time_t last;
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int lastLn; /* 0 or the number chars counted from the second
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last newline character. */
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int overwrite; /* overwrite last line when value has not changed */
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int oldValue; /* old value to be overwritten */
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int numeric;
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int exact;
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Logger *next;
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};
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static char *dir = NULL;
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static Logger *list;
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static time_t lastLife = 0;
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/*--------------------------------------------------------------------------*/
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char *LoggerName(Logger *log) {
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return log->name;
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}
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/*--------------------------------------------------------------------------*/
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void LoggerSetNumeric(Logger *log, int numeric) {
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if (log) {
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log->numeric = numeric;
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}
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}
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/*--------------------------------------------------------------------------*/
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Logger *LoggerFind(const char *name) {
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Logger *p;
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p = list;
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while (p != NULL) {
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if (0==strcasecmp(name, p->name)) {
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return p;
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}
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p = p->next;
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}
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return NULL;
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}
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/*--------------------------------------------------------------------------*/
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#define LASTLOGTXT "#last logging entry at:\n"
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void LoggerSetDir(char *dirarg) {
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char path[256], line[32];
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FILE *fil;
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dir = dirarg;
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snprintf(path, sizeof path, "%s/lastlife.dat", dir);
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fil = fopen(path, "r");
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if (fil) {
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fgets(line, sizeof line, fil);
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if (strcmp(line, LASTLOGTXT) == 0) {
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fgets(line, sizeof line, fil);
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lastLife = atol(line);
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if (lastLife < 1000000000) {
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printf("bad lastLife %ld\n", (long)lastLife);
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}
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}
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fclose(fil);
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} else {
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printf("can not read %s\n", path);
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}
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}
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/*--------------------------------------------------------------------------*/
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char *LoggerGetDir(void) {
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char path[256];
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FILE *fil;
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time_t now;
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static time_t last;
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now = time(NULL);
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if (now != last) {
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snprintf(path, sizeof path, "%s/lastlife.dat", dir);
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fil = fopen(path, "w");
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if (fil) {
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fprintf(fil, "%s%ld\n", LASTLOGTXT, (long)now);
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fclose(fil);
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} else {
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printf("can not write %s\n", path);
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}
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last = now;
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}
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return dir;
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}
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/*--------------------------------------------------------------------------*/
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int LoggerVarPath(char *dir, char *path, int pathLen, char *name) {
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int l;
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l = strlen(dir);
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if (l + strlen(name) + 2 >= pathLen) {
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path[0]='\0';
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return 0;
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}
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strcpy(path, dir);
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path[l] = '/'; l++;
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for (;*name != '\0'; name++, l++) {
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path[l] = tolower(*name);
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}
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path[l] = '/'; l++;
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path[l] = '\0';
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return l;
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}
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/*--------------------------------------------------------------------------*/
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int LoggerWrite0(Logger *log, time_t now, int period, char *value) {
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char path[256], stim[32], buf[32], chr;
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struct tm *tm;
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int yday;
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int isdst;
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int l, ext, skip, changed;
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FILE *fil;
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long endPos, pos1, p;
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LoggerGetDir();
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if (dir == NULL) return 0;
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if (now == 0) {
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printf("now==0\n");
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}
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tm = localtime(&log->last);
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isdst = tm->tm_isdst;
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yday = tm->tm_yday;
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tm = localtime(&now);
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if (tm->tm_yday != yday) {
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log->period = -1;
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}
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l = LoggerVarPath(dir, path, sizeof path, log->name);
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strftime(path + l, sizeof path - l, "%m-%d.log", tm);
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strftime(stim, sizeof stim, "#%Y-%m-%d %H:%M:%S", tm);
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fil = fopen(path, "r+");
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skip = 0;
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if (fil == NULL) { /* create new file */
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fil = fopen(path, "w+");
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if (fil == NULL) return 0;
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fprintf(fil, "%s isdst %d period %d exact %d\n", stim, tm->tm_isdst, period, log->exact);
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endPos = ftell(fil);
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fseek(fil, -1, SEEK_CUR);
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} else { /* check if file is from today */
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fgets(buf, sizeof buf, fil);
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if (0 != strncmp(buf, stim, 11)) {
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fclose(fil);
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fil=fopen(path, "w+"); /* overwrite old logfile */
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if (fil == NULL) return 0;
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fputs(stim, fil);
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endPos = ftell(fil);
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fseek(fil, -1, SEEK_CUR);
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log->period = -1;
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} else {
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fseek(fil, -log->lastLn, SEEK_END); /* set position to last line */
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endPos = ftell(fil) + log->lastLn;
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if (endPos > 0 && log->lastLn == 0) {
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/* find last newline in newly opened file */
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fseek(fil, -1, SEEK_CUR);
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chr = fgetc(fil);
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while (chr != '\n' && ftell(fil) >= 2) {
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fseek(fil, -2, SEEK_CUR);
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chr = fgetc(fil);
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}
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fseek(fil, -1, SEEK_CUR);
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} else if (now != log->last) {
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skip = 1;
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}
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}
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}
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changed = (0 != strcmp(value, log->old));
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if (period != log->period) {
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log->period = period;
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if (log->numeric) {
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snprintf(buf, sizeof buf, "\t%d", period);
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} else {
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strcpy(buf, "\t0");
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}
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changed = 1;
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} else {
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buf[0]='\0';
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if (log->overwrite && !changed) {
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skip = 0;
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}
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}
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pos1 = 0;
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chr = fgetc(fil);
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while (chr != EOF) {
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if (chr == '\n') {
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skip--;
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if (skip < 0) break;
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}
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chr = fgetc(fil);
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}
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if (chr == EOF) {
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if (pos1 == 0) {
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fputs("\n#no newline found\n", fil);
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} else {
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fseek(fil, pos1, SEEK_SET);
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}
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}
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if (tm->tm_isdst != isdst) {
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fprintf(fil, "#isdst %d\n", tm->tm_isdst);
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}
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pos1 = ftell(fil);
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strftime(stim, sizeof stim,"%H:%M:%S", tm);
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fprintf(fil, "%s\t%s%s\n", stim, value, buf);
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for (p = ftell(fil); p < endPos; p++) { /* overwrite dirt after last line */
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fprintf(fil, " ");
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}
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endPos = ftell(fil);
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fclose(fil);
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log->lastLn = (endPos - pos1) + 1;
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/* overwrite next time when value has not changed */
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log->overwrite = ! changed;
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l = strlen(value);
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if (l >= log->oldsize) {
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ext = ((l - log->oldsize)/16 + 1) * 16;
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if (ext < log->oldsize / 4) ext += (log->oldsize / 64) * 16;
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log->oldsize += ext;
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free(log->old);
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log->old = calloc(1, log->oldsize);
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assert(log->old);
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assert(l < log->oldsize);
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}
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strcpy(log->old, value);
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log->old[l] = '\0';
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log->last = now;
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return 1;
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}
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/*--------------------------------------------------------------------------*/
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int LoggerWrite(Logger *log, time_t now, int period, char *value) {
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Logger *p;
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time_t h0;
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static int yday = -1;
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struct tm *tm;
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int l;
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FILE *fil;
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char path[256];
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char tim[256];
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tm = localtime(&now);
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if (tm->tm_yday != yday) {
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tm->tm_hour = 0;
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tm->tm_min = 0;
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tm->tm_sec = 0;
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h0 = mktime(tm);
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yday = tm->tm_yday;
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l = LoggerVarPath(dir, path, sizeof path, "debug");
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strftime(path + l, sizeof path - l, "%m-%d.log", tm);
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fil=fopen(path, "a");
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if (fil) {
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strftime(tim, sizeof tim, "h0 %m-%d %H:%M:%S\n", localtime(&h0));
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fputs(tim, fil);
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}
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/* log old values (forced midnight log) */
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p = list;
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while (p != NULL) {
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if (fil) {
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strftime(tim, sizeof tim, "last %m-%d %H:%M:%S, ", localtime(&p->last));
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fputs(tim, fil);
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fprintf(fil, "period %d, name %s, old %s\n", p->period, p->name, p->old);
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}
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if (p->last < h0 && p->last != 0 &&
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p->period >= 0 && p->old[0] != '\0') {
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LoggerWrite0(p, h0, p->period, p->old);
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p->overwrite = 0;
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}
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p = p->next;
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}
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if (fil) fclose(fil);
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}
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return LoggerWrite0(log, now, period, value);
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}
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/*--------------------------------------------------------------------------*/
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time_t LoggerLastTime(Logger *log) {
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if (log->last != 0 && log->period > 0) {
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return log->last;
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}
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return 0;
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}
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/*--------------------------------------------------------------------------*/
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int LoggerGetValue(void *data, char *value, int size) {
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Logger *log = data;
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value[0]='\0';
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strncat(value, log->old, size - 1);
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return 1;
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}
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/*--------------------------------------------------------------------------*/
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void LoggerKill(Logger *log) {
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/* we do not really free the logger, it might be reused
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for the same variable later. We set the value to undefined */
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if (list != NULL) { /* LoggerFreeAll not yet called */
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LoggerWrite(log, time(NULL), 0, "");
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}
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}
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/*--------------------------------------------------------------------------*/
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Logger *LoggerMake(char *name, int period, int exact) {
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Logger *log;
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char path[256];
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struct stat st;
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int i;
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time_t t;
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LoggerGetDir();
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if (dir == NULL) return NULL;
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LoggerVarPath(dir, path, sizeof path, name);
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i = stat(path, &st);
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if (i >= 0) {
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if (((st.st_mode >> 12) & 15) != 4) { /* exists, but is no directory */
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return NULL;
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}
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} else {
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i = mkdir(path, S_IRWXU+S_IRGRP+S_IXGRP+S_IROTH+S_IXOTH);
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if (i < 0) return NULL; /* mkdir failed */
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}
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log = LoggerFind(name); /* look if logger already exists */
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if (log == NULL) {
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log = calloc(1, sizeof *log);
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if (log == NULL) return NULL;
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log->name = strdup(name);
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if (log->name == NULL) {
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free(log);
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return NULL;
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}
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log->period = -1;
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log->exact = exact;
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log->old = calloc(1,12);
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log->oldsize = 12;
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log->last = 0;
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log->lastLn = 0;
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log->numeric = 1;
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log->next = list;
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list = log;
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t = time(NULL) -1;
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if (lastLife != 0 && lastLife + period < t) {
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t = lastLife + period;
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}
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LoggerWrite(log, t, period, ""); /* value was undefined since last life of server */
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}
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return log;
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}
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/*--------------------------------------------------------------------------*/
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#ifndef TECS_LOG
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typedef enum { NUMERIC, TEXT } CompType;
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typedef struct {
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SConnection *pCon;
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char *var;
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int exact;
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CompType type;
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time_t step;
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time_t tlim;
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time_t tmin, tmax, tlast, told;
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float ymin, ymax, ylast, yold;
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char slast[256];
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char set[256];
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int np;
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} Compressor;
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static char *dir2 = NULL;
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static void LoggerInitC(Compressor *c, SConnection *pCon, time_t step) {
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c->pCon = pCon;
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c->step = step;
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c->tmin = -2;
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c->tmax = 0;
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c->tlast = 0;
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c->tlim = 0;
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c->told = 0;
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c->slast[0]='\0';
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c->ylast = LOGGER_NAN;
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}
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static void LoggerOutStr(Compressor *c, time_t t, char *str) {
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char line[256];
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/* printf("out %ld %g\n", t, y); */
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if (0 != strcmp(str, c->slast)) {
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snprintf(line, sizeof line, "%ld %s\n", (long)(t - c->tlast), str);
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c->tlast = t;
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c->slast[0]='\0';
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strncat(c->slast, str, sizeof c->slast - 1);
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SCWrite(c->pCon, line, eWarning);
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c->np--;
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}
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}
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static void LoggerOut(Compressor *c, time_t t, float y) {
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char line[80];
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/* printf("out %ld %g\n", t, y); */
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if (y != c->ylast || !c->exact) {
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c->ylast = y;
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if (y == LOGGER_NAN) {
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snprintf(line, sizeof line, "%ld\n", (long)(t - c->tlast));
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} else {
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snprintf(line, sizeof line, "%ld %g\n", (long)(t - c->tlast), y);
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}
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/* printf("-%s\n", line); */
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c->tlast = t;
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SCWrite(c->pCon, line, eWarning);
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c->np--;
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}
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}
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static void LoggerPut(Compressor *c, time_t t, char *value) {
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char *p;
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double y;
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if (c->var) {
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SCPrintf(c->pCon, eWarning, "*%s exact %d\n", c->var, c->exact);
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c->var = NULL;
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}
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if (c->type == NUMERIC) {
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if (t == 0) { /* finish */
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t = c->tlim + 3 * c->step;
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y = 0;
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} else {
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y = strtod(value, &p);
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if (p == value) {
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y = LOGGER_NAN;
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} else {
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if (y == LOGGER_NAN) y *= 1.0000002;
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}
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}
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/* printf("put %ld %g\n", t, y); */
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if (c->tlim == 0) goto first;
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if (t >= c->tlim) {
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c->tlim += c->step;
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if (c->tmin > c->tmax) {
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LoggerOut(c, c->tmax, c->ymax);
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c->ymax = c->ymin;
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c->tmax = c->tmin;
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} else {
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LoggerOut(c, c->tmin, c->ymin);
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if (c->tmin == c->tmax) goto first;
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c->ymin = c->ymax;
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c->tmin = c->tmax;
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}
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if (t >= c->tlim) {
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LoggerOut(c, c->tmin, c->ymin);
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if (t >= c->tlim + c->step) {
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LoggerOut(c, c->told, c->yold);
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}
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goto first;
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}
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}
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if (y <= c->ymin) {
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c->ymin = y;
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c->tmin = t;
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} else if (y > c->ymax) {
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c->ymax = y;
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c->tmax = t;
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}
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c->yold = y;
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c->told = t;
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return;
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first:
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c->tlim = t + 2 * c->step;
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c->tmin = t;
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c->tmax = t;
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c->ymin = y;
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c->ymax = y;
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return;
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} else if (c->type == TEXT) {
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if (t != 0) LoggerOutStr(c, t, value);
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}
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}
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/*--------------------------------------------------------------------------*/
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int LoggerGraph(SConnection *pCon, SicsInterp *pSics, void *pData,
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int argc, char *argv[]) {
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time_t from, to, step, xs, lastt, now;
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long lxs;
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char *p;
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int i, iarg0, l, iret, loss, np;
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int inRange;
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int yday=0;
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time_t t, startim;
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struct tm tm;
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char stim[32], path[256], line[256], lastval[256];
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char *lin, *val, *stp;
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FILE *fil;
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Compressor c;
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float yy, lasty;
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CompType type0;
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DIR *dr;
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char *opt;
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int isdst;
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int overflow;
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/* argtolower(argc, argv); */
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if (argc < 4) goto illarg;
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now = time(NULL);
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from = strtol(argv[1], &p, 0); /* unix time, not year 2038 safe */
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if (p == argv[1]) goto illarg;
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to = strtol(argv[2], NULL, 0);
|
|
if (p == argv[2]) goto illarg;
|
|
if (from < ONE_YEAR) {
|
|
from += now;
|
|
}
|
|
if (to < ONE_YEAR) {
|
|
to += now;
|
|
}
|
|
iarg0 = 4;
|
|
if (strcasecmp(argv[3],"text") == 0) { /* non-numeric values */
|
|
step = 1;
|
|
type0 = TEXT;
|
|
np = from - to + 2;
|
|
} else if (strcasecmp(argv[3],"np") == 0) { /* max. number of points */
|
|
type0 = NUMERIC;
|
|
iarg0 = 5;
|
|
np = strtol(argv[4], NULL, 0);
|
|
if (to <= from) {
|
|
step = 1;
|
|
} else if (np <= 2) {
|
|
step = to - from;
|
|
} else {
|
|
step = (to - from) / (np - 2) + 1;
|
|
}
|
|
} else {
|
|
step = strtol(argv[3], NULL, 0);
|
|
if (step <= 0) step = 1;
|
|
type0 = NUMERIC;
|
|
np = (from - to) / step + 2;
|
|
}
|
|
if (p == argv[3]) goto illarg;
|
|
if (step <= 0) step = 1;
|
|
|
|
snprintf(line, sizeof line, "%ld\n", (long)now);
|
|
SCWrite(pCon, line, eWarning);
|
|
|
|
if (dir == NULL) {
|
|
dir = IFindOption(pSICSOptions, "LoggerDir");
|
|
if (dir == NULL) {
|
|
SCWrite(pCon, "LoggerDir not found", eError);
|
|
return 0;
|
|
}
|
|
LoggerSetDir(dir);
|
|
}
|
|
if (dir2 == NULL) {
|
|
dir2 = IFindOption(pSICSOptions, "LoggerDir2");
|
|
if (dir2 == NULL) dir2="";
|
|
}
|
|
|
|
loss = 0;
|
|
overflow = 0;
|
|
for (i=iarg0; i<argc; i++) {
|
|
startim = from;
|
|
t = 0;
|
|
lastt = 0;
|
|
inRange = 0;
|
|
xs = step;
|
|
LoggerInitC(&c, pCon, step);
|
|
c.var = argv[i];
|
|
c.type = type0;
|
|
c.np = np;
|
|
l = LoggerVarPath(dir, path, sizeof path, c.var);
|
|
dr = opendir(path);
|
|
if (dr) {
|
|
closedir(dr);
|
|
} else {
|
|
l = LoggerVarPath(dir2, path, sizeof path, c.var);
|
|
dr = opendir(path);
|
|
if (dr) {
|
|
closedir(dr);
|
|
}
|
|
}
|
|
|
|
isdst = -1;
|
|
fil = NULL;
|
|
while (startim <= to && c.tlast <= to) {
|
|
tm = *localtime(&startim);
|
|
if (tm.tm_yday != yday) {
|
|
if (fil != NULL) { /* close file if day changed */
|
|
fclose(fil);
|
|
fil=NULL;
|
|
}
|
|
}
|
|
if (fil == NULL) {
|
|
yday = tm.tm_yday;
|
|
strftime(path + l, sizeof path - l, "%m-%d.log", &tm);
|
|
fil = fopen(path, "r");
|
|
if (fil != NULL) { /* check if file is from the given year */
|
|
strftime(stim, sizeof stim, "#%Y-%m-%d", &tm);
|
|
fgets(line, sizeof line, fil);
|
|
if (0 != strncmp(line, stim, 11)) {
|
|
fclose(fil);
|
|
fil = NULL;
|
|
} else {
|
|
opt = strstr(line, "isdst");
|
|
if (opt) {
|
|
sscanf(opt, "isdst %d", &isdst);
|
|
}
|
|
opt = strstr(line, "exact");
|
|
if (opt) {
|
|
sscanf(opt, "exact %d", &c.exact);
|
|
}
|
|
opt = strstr(line, "period");
|
|
if (opt) {
|
|
sscanf(opt, "period %ld", &lxs);
|
|
if (lxs == 0) {
|
|
c.type = TEXT;
|
|
} else {
|
|
c.type = type0;
|
|
xs = lxs;
|
|
}
|
|
if (xs < step) {
|
|
loss = 1;
|
|
xs = step;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
if (fil == NULL) {
|
|
lin = NULL;
|
|
} else {
|
|
do {
|
|
lin = fgets(line, sizeof line, fil);
|
|
/* printf("%s\n", line); */
|
|
if (lin == NULL) break;
|
|
if (strncmp(line, "#isdst", 6) == 0) {
|
|
sscanf(line, "#isdst %d", &isdst);
|
|
lin[0]='\0';
|
|
} else if (strncmp(line, "#exact", 6) == 0) {
|
|
sscanf(line, "#exact %d", &c.exact);
|
|
lin[0]='\0';
|
|
} else if (strncmp(line, "#period", 7) == 0) {
|
|
sscanf(line, "#period %ld", &lxs);
|
|
lin[0]='\0';
|
|
if (lxs == 0) {
|
|
c.type = TEXT;
|
|
} else {
|
|
c.type = type0;
|
|
xs = lxs;
|
|
}
|
|
if (xs < step) {
|
|
loss = 1;
|
|
xs = step;
|
|
}
|
|
} else {
|
|
p = strchr(line, '\n'); if (p) *p='\0';
|
|
p = strchr(line, '#'); if (p) *p='\0';
|
|
}
|
|
} while (lin[0] == '\0');
|
|
}
|
|
if (lin != NULL) {
|
|
/* printf(" %s\n", line); */
|
|
p = strchr(line, '\t');
|
|
if (p) {
|
|
*p='\0';
|
|
val = p+1;
|
|
} else {
|
|
val = "";
|
|
}
|
|
p = strchr(val, '\t');
|
|
if (p) {
|
|
stp = p+1;
|
|
*p='\0';
|
|
iret = sscanf(stp, "%ld", &lxs);
|
|
if (iret == 1) {
|
|
if (lxs == 0) {
|
|
c.type = TEXT;
|
|
} else {
|
|
c.type = type0;
|
|
xs = lxs;
|
|
}
|
|
if (xs < step) {
|
|
loss = 1;
|
|
xs = step;
|
|
}
|
|
}
|
|
}
|
|
iret = sscanf(line, "%d:%d:%d", &tm.tm_hour, &tm.tm_min, &tm.tm_sec);
|
|
if (iret != 3) {
|
|
lin = NULL;
|
|
} else {
|
|
tm.tm_isdst = isdst;
|
|
t=mktime(&tm);
|
|
if (!inRange) {
|
|
if (t < startim) {
|
|
lastval[0]='\0';
|
|
strncat(lastval, val, sizeof lastval - 1);
|
|
lastt = t;
|
|
} else {
|
|
inRange=1;
|
|
if (lastt != 0) {
|
|
LoggerPut(&c, lastt, lastval);
|
|
}
|
|
LoggerPut(&c, t, val);
|
|
}
|
|
} else {
|
|
LoggerPut(&c, t, val);
|
|
}
|
|
}
|
|
}
|
|
if (lin == NULL) {
|
|
tm.tm_hour = 24; /* try next day */
|
|
tm.tm_min = 0;
|
|
tm.tm_sec = 0;
|
|
tm.tm_isdst = -1;
|
|
startim=mktime(&tm);
|
|
continue;
|
|
}
|
|
}
|
|
if (!inRange) {
|
|
if (lastt != 0) {
|
|
LoggerPut(&c, lastt, lastval);
|
|
}
|
|
}
|
|
c.ylast = LOGGER_NAN; /* force output of last value */
|
|
LoggerPut(&c, 0, ""); /* finish */
|
|
if (fil) {
|
|
fclose(fil);
|
|
fil = NULL;
|
|
}
|
|
if (c.np < 0) overflow = 1;
|
|
}
|
|
snprintf(line, sizeof line, "*%d %d\n", loss, overflow);
|
|
SCWrite(pCon, line, eWarning);
|
|
return 1;
|
|
illarg:
|
|
SCWrite(pCon, "illegal argument(s)", eError);
|
|
return 0;
|
|
}
|
|
/*--------------------------------------------------------------------------*/
|
|
void LoggerFreeAll(void *data) {
|
|
Logger *p, *next;
|
|
|
|
KillDummy(data);
|
|
p = list;
|
|
while (p != NULL) {
|
|
next = p->next;
|
|
if (p->name) free(p->name);
|
|
if (p->old) free(p->old);
|
|
free(p);
|
|
p = next;
|
|
}
|
|
list = NULL;
|
|
}
|
|
/*--------------------------------------------------------------------------*/
|
|
void LoggerInit(void) {
|
|
AddCommand(pServ->pSics,"Graph",LoggerGraph,LoggerFreeAll,NULL);
|
|
}
|
|
#endif /* TECS_LOG */
|