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goblin 0.0.7

An impish, cross-platform binary parsing and loading crate
Documentation 
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use scroll;
use pe::error;

use super::section_table;

pub fn is_in_range (rva: usize, r1: usize, r2: usize) -> bool {
    r1 <= rva && rva < r2
}

fn rva2offset (rva: usize, section: &section_table::SectionTable) -> usize {
    (rva - section.virtual_address as usize) + section.pointer_to_raw_data as usize
}

fn is_in_section (rva: usize, section: &section_table::SectionTable) -> bool {
    section.virtual_address as usize <= rva && rva < (section.virtual_address + section.virtual_size) as usize
}

pub fn find_offset (rva: usize, sections: &[section_table::SectionTable]) -> Option<usize> {
    for section in sections {
        if is_in_section(rva, &section) {
            return Some(rva2offset(rva, &section))
        }
    }
    None
}

pub fn try_name<'a, B: scroll::Gread + scroll::Gread<scroll::ctx::StrCtx, scroll::Error>>(bytes: &'a B, rva: usize, sections: &[section_table::SectionTable]) -> error::Result<&'a str> {
    match find_offset(rva, sections) {
        Some(offset) => {
            Ok(bytes.pread::<&str>(offset)?)
        },
        None => {
            Err(error::Error::Malformed(format!("Cannot find name from rva {:#x} in sections: {:?}", rva, sections)))
        }
    }
}