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// Copyright 2015 syzkaller project authors. All rights reserved.
// Use of this source code is governed by Apache 2 LICENSE that can be found in the LICENSE file.
package prog
import (
"bytes"
"strconv"
)
// LogEntry describes one program in execution log.
type LogEntry struct {
P *Prog
Proc int // index of parallel proc
Start int // start offset in log
End int // end offset in log
}
func ParseLog(data []byte) []*LogEntry {
var entries []*LogEntry
ent := &LogEntry{}
var cur []byte
for pos := 0; pos < len(data); {
nl := bytes.IndexByte(data[pos:], '\n')
if nl == -1 {
nl = len(data)
} else {
nl += pos
}
line := data[pos : nl+1]
pos0 := pos
pos = nl + 1
const delim = "executing program "
if delimPos := bytes.Index(line, []byte(delim)); delimPos != -1 {
if ent.P != nil && len(ent.P.Calls) != 0 {
ent.End = pos0
entries = append(entries, ent)
}
procStart := delimPos + len(delim)
procEnd := procStart
for procEnd != len(line) && line[procEnd] >= '0' && line[procEnd] <= '9' {
procEnd++
}
proc, _ := strconv.Atoi(string(line[procStart:procEnd]))
ent = &LogEntry{
Proc: proc,
Start: pos0,
}
cur = nil
continue
}
if ent == nil {
continue
}
tmp := append(cur, line...)
p, err := Deserialize(tmp)
if err != nil {
continue
}
cur = tmp
ent.P = p
}
if ent.P != nil && len(ent.P.Calls) != 0 {
ent.End = len(data)
entries = append(entries, ent)
}
return entries
}
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