Searching a log file [duplicate]

This question already has answers here: 开发者_如何转开发 Closed 11 years ago.

Possible Duplicate:

Searching using Regex in VIM or elsewhere

I'm searching a huge ~600 Mb file for a particular pattern which is 7 Hexadecimal values long. The Problem is

1. the 'pattern' could be on the next line and
2. there are several addressing lines.

I got rid of problem 1 by getting rid of all the carriage returns but I'm still faced with even if the values are on the next line I have no idea how to search past the address line. Below is an example:

0x000001A0: 36 5B 09 76 99 31 55 09 78 99 34 51 49 BF E0 03

0x000001B0: 28 0B 0A 03 0B E0 07 28 0B 0A 03 0B 49 58 09 35

For example: I want to be able to find the pattern 49 BF E0 03 28 0B 0A, Which goes across lines 1 and 2 above but I can't just search for it regularly because of the 0x000001B0: at the beginning of the line Any suggestions or c++ code or excel ideas would be helpful. I'm using VIM at the moment to open this big file and using excel won't open the entire thing.

---

Python, just read in line, split, chuck the first part, concat the hex into a string, and search. Something like this would work:

hex = ""
for each line in lines:
    tmp = line.split() // split on whitespace
    hex += tmp[1:] // grab everything after address

if hex.contains(pattern):
    # do something

Or use a regex, but you get the basic idea.

---

You could use a circular buffer.

1. Open the file
2. Read a line
3. Read address and discart it
4. Read first value and put it into the buffer
5. Read next value, and throw last value of the buffer (std::list could be good for that)
6. Check if buffer contains the pattern
7. Loop through 5 up to the end of the line
8. Loop through 2 up to the end of the file