-/* Conky, a system monitor, based on torsmo
+/* -*- mode: c; c-basic-offset: 4; tab-width: 4; indent-tabs-mode: t -*-
+ * vim: ts=4 sw=4 noet ai cindent syntax=c
+ *
+ * Conky, a system monitor, based on torsmo
*
* Any original torsmo code is licensed under the BSD license
*
* Please see COPYING for details
*
* Copyright (c) 2004, Hannu Saransaari and Lauri Hakkarainen
- * Copyright (c) 2005-2009 Brenden Matthews, Philip Kovacs, et. al.
+ * Copyright (c) 2005-2010 Brenden Matthews, Philip Kovacs, et. al.
* (see AUTHORS)
* All rights reserved.
*
*
*/
+#define _GNU_SOURCE
+#include "common.h"
#include "text_object.h"
#include "logging.h"
+#include <sys/stat.h>
+#include <ctype.h>
+#include <fcntl.h>
+#include <string.h>
+#include <unistd.h>
#define MAX_HEADTAIL_LINES 30
#define DEFAULT_MAX_HEADTAIL_USES 2
-void init_tailhead(const char* type, const char* arg, struct text_object *obj, void* free_at_crash) {
- unsigned int args;
+struct headtail {
+ int wantedlines;
+ char *logfile;
+ char *buffer;
+ int current_use;
+ int max_uses;
+ int reported;
+};
- if(arg) {
- obj->data.headtail.logfile=malloc(strlen(arg));
- obj->data.headtail.max_uses = DEFAULT_MAX_HEADTAIL_USES;
- args = sscanf(arg, "%s %d %d", obj->data.headtail.logfile, &obj->data.headtail.wantedlines, &obj->data.headtail.max_uses);
- if(args == 2 || args == 3) {
- if(obj->data.headtail.max_uses < 1) {
- free(obj->data.headtail.logfile);
- CRIT_ERR(obj, free_at_crash, "invalid arg for %s, next_check must be larger than 0", type);
- }
- if (obj->data.headtail.wantedlines > 0 && obj->data.headtail.wantedlines <= MAX_HEADTAIL_LINES) {
- to_real_path(obj->data.headtail.logfile, obj->data.headtail.logfile);
- obj->data.headtail.buffer = NULL;
- obj->data.headtail.current_use = 0;
- }else{
- free(obj->data.headtail.logfile);
- CRIT_ERR(obj, free_at_crash, "invalid arg for %s, number of lines must be between 1 and %d", type, MAX_HEADTAIL_LINES);
+static void tailstring(char *string, int endofstring, int wantedlines) {
+ int i, linescounted = 0;
+
+ string[endofstring] = 0;
+ if(endofstring > 0) {
+ if(string[endofstring-1] == '\n') { //work with or without \n at end of file
+ string[endofstring-1] = 0;
+ }
+ for(i = endofstring - 1; i >= 0 && linescounted < wantedlines; i--) {
+ if(string[i] == '\n') {
+ linescounted++;
}
- } else {
- free(obj->data.headtail.logfile);
- CRIT_ERR(obj, free_at_crash, "%s needs a file as 1st and a number of lines as 2nd argument", type);
}
+ if(i > 0) {
+ strfold(string, i+2);
+ }
+ }
+}
+
+void free_tailhead(struct text_object *obj)
+{
+ struct headtail *ht = obj->data.opaque;
+ if (!ht)
+ return;
+ if (ht->logfile)
+ free(ht->logfile);
+ if (ht->buffer)
+ free(ht->buffer);
+ free(obj->data.opaque);
+ obj->data.opaque = NULL;
+}
+
+void init_tailhead(const char* type, const char* arg, struct text_object *obj, void* free_at_crash) {
+ unsigned int args;
+ struct headtail *ht;
+
+ ht = malloc(sizeof(struct headtail));
+ memset(ht, 0, sizeof(struct headtail));
+
+ ht->logfile = malloc(DEFAULT_TEXT_BUFFER_SIZE);
+ memset(ht->logfile, 0, DEFAULT_TEXT_BUFFER_SIZE);
+
+ ht->max_uses = DEFAULT_MAX_HEADTAIL_USES;
+
+ args = sscanf(arg, "%s %d %d", ht->logfile, &ht->wantedlines, &ht->max_uses);
+ if (args < 2 || args > 3) {
+ free_tailhead(obj);
+ CRIT_ERR(obj, free_at_crash, "%s needs a file as 1st and a number of lines as 2nd argument", type);
+ }
+ if (ht->max_uses < 1) {
+ free_tailhead(obj);
+ CRIT_ERR(obj, free_at_crash, "invalid arg for %s, next_check must be larger than 0", type);
+ }
+ if (ht->wantedlines > 0 && ht->wantedlines <= MAX_HEADTAIL_LINES) {
+ to_real_path(ht->logfile, ht->logfile);
+ ht->buffer = NULL;
+ ht->current_use = 0;
} else {
- CRIT_ERR(obj, free_at_crash, "%s needs arguments", type);
+ free_tailhead(obj);
+ CRIT_ERR(obj, free_at_crash, "invalid arg for %s, number of lines must be between 1 and %d", type, MAX_HEADTAIL_LINES);
}
+ obj->data.opaque = ht;
}
void print_tailhead(const char* type, struct text_object *obj, char *p, int p_max_size) {
- int i, endofstring = 0, linescounted = 0;
+ int fd, i, endofstring = 0, linescounted = 0;
FILE *fp;
+ struct stat st;
+ struct headtail *ht = obj->data.opaque;
- if(obj->data.headtail.buffer && obj->data.headtail.current_use >= obj->data.headtail.max_uses - 1) {
- free(obj->data.headtail.buffer);
- obj->data.headtail.buffer = NULL;
- obj->data.headtail.current_use = 0;
+ if (!ht)
+ return;
+
+ //empty the buffer and reset the counter if we used it the max number of times
+ if(ht->buffer && ht->current_use >= ht->max_uses - 1) {
+ free(ht->buffer);
+ ht->buffer = NULL;
+ ht->current_use = 0;
}
- if(obj->data.headtail.buffer) {
- strcpy(p, obj->data.headtail.buffer);
- obj->data.headtail.current_use++;
- }else{
- fp = open_file(obj->data.headtail.logfile, &obj->a);
- if(fp != NULL) {
- if(strcmp(type,"head") == 0) {
- for(i = 0; i < obj->data.headtail.wantedlines; i++) {
- fgets(p + endofstring, p_max_size - endofstring, fp);
- endofstring = strlen(p);
- }
- } else if(strcmp(type,"tail") == 0) {
- fseek(fp, - p_max_size, SEEK_END);
- fread(p, 1, p_max_size, fp);
- p[p_max_size - 1] = 0;
- if(p[strlen(p)-1] == '\n') { //work with or without \n at end of file
- p[strlen(p)-1] = 0;
+ //use the buffer if possible
+ if(ht->buffer) {
+ strcpy(p, ht->buffer);
+ ht->current_use++;
+ }else{ //otherwise find the needed data
+ if(stat(ht->logfile, &st) == 0) {
+ if (S_ISFIFO(st.st_mode)) {
+ fd = open_fifo(ht->logfile, &ht->reported);
+ if(fd != -1) {
+ if(strcmp(type, "head") == 0) {
+ for(i = 0; linescounted < ht->wantedlines; i++) {
+ read(fd, p + i, 1);
+ if(p[i] == '\n') {
+ linescounted++;
+ }
+ }
+ p[i] = 0;
+ } else if(strcmp(type, "tail") == 0) {
+ i = read(fd, p, p_max_size - 1);
+ tailstring(p, i, ht->wantedlines);
+ } else {
+ CRIT_ERR(NULL, NULL, "If you are seeing this then there is a bug in the code, report it !");
+ }
}
- for(i = strlen(p); i >= 0 && linescounted < obj->data.headtail.wantedlines; i--) {
- if(p[i] == '\n') {
- linescounted++;
+ close(fd);
+ } else {
+ fp = open_file(ht->logfile, &ht->reported);
+ if(fp != NULL) {
+ if(strcmp(type, "head") == 0) {
+ for(i = 0; i < ht->wantedlines; i++) {
+ fgets(p + endofstring, p_max_size - endofstring, fp);
+ endofstring = strlen(p);
+ }
+ } else if(strcmp(type, "tail") == 0) {
+ fseek(fp, - p_max_size, SEEK_END);
+ i = fread(p, 1, p_max_size - 1, fp);
+ tailstring(p, i, ht->wantedlines);
+ } else {
+ CRIT_ERR(NULL, NULL, "If you are seeing this then there is a bug in the code, report it !");
}
+ fclose(fp);
}
- if(i > 0) {
- strfold(p, i+2);
+ }
+ ht->buffer = strdup(p);
+ } else {
+ CRIT_ERR(NULL, NULL, "$%s can't find information about %s", type, ht->logfile);
+ }
+ }
+ return;
+}
+
+/* FIXME: use something more general (see also tail.c, head.c */
+#define BUFSZ 0x1000
+
+void print_lines(struct text_object *obj, char *p, int p_max_size)
+{
+ static int rep = 0;
+ FILE *fp = open_file(obj->data.s, &rep);
+ char buf[BUFSZ];
+ int j, lines;
+
+ if (!fp) {
+ snprintf(p, p_max_size, "File Unreadable");
+ return;
+ }
+
+ lines = 0;
+ while(fgets(buf, BUFSZ, fp) != NULL){
+ for(j = 0; buf[j] != 0; j++) {
+ if(buf[j] == '\n') {
+ lines++;
+ }
+ }
+ }
+ snprintf(p, p_max_size, "%d", lines);
+ fclose(fp);
+}
+
+void print_words(struct text_object *obj, char *p, int p_max_size)
+{
+ static int rep = 0;
+ FILE *fp = open_file(obj->data.s, &rep);
+ char buf[BUFSZ];
+ int j, words;
+ char inword = 0;
+
+ if(!fp) {
+ snprintf(p, p_max_size, "File Unreadable");
+ return;
+ }
+
+ words = 0;
+ while(fgets(buf, BUFSZ, fp) != NULL){
+ for(j = 0; buf[j] != 0; j++) {
+ if(!isspace(buf[j])) {
+ if(!inword) {
+ words++;
+ inword = 1;
}
} else {
- CRIT_ERR(NULL, NULL, "If you are seeing this then there is a bug in the code, report it !");
+ inword = 0;
}
- fclose(fp);
- obj->data.headtail.buffer = strdup(p);
}
}
- return;
+ snprintf(p, p_max_size, "%d", words);
+ fclose(fp);
}
projects / monky / blobdiff