#!/usr/bin/awk -f# SPDX-License-Identifier: GPL-2.0## Use #line directives to preserve original __LINE__ numbers across patches to# avoid unwanted compilation changes.BEGIN { in_hunk = 0 skip = 0}/^--- / { skip = $2 !~ /\.(c|h)$/ print next}/^@@/ { if (skip) { print next } in_hunk = 1 # @@ -1,3 +1,4 @@: # 1: line number in old file # 3: how many lines the hunk covers in old file # 1: line number in new file # 4: how many lines the hunk covers in new file match($0, /^@@ -([0-9]+)(,([0-9]+))? \+([0-9]+)(,([0-9]+))? @@/, m) # Set 'cur' to the old file's line number at the start of the hunk. It # gets incremented for every context line and every line removal, so # that it always represents the old file's current line number. cur = m[1] # last = last line number of current hunk last = cur + (m[3] ? m[3] : 1) - 1 need_line_directive = 0 print next}{ if (skip || !in_hunk || $0 ~ /^\\ No newline at end of file/) { print next } # change line if ($0 ~ /^[+-]/) { # inject #line after this group of changes need_line_directive = 1 if ($0 ~ /^-/) cur++ print next } # If this is the first context line after a group of changes, inject # the #line directive to force the compiler to correct the line # numbering to match the original file. if (need_line_directive) { print "+#line " cur need_line_directive = 0 } if (cur == last) in_hunk = 0 cur++ print}
#!/usr/bin/awk -f
# SPDX-License-Identifier: GPL-2.0
#
# Use #line directives to preserve original __LINE__ numbers across patches to
# avoid unwanted compilation changes.
BEGIN {
in_hunk = 0
skip = 0
}
/^--- / {
skip = $2 !~ /\.(c|h)$/
print
next
}
/^@@/ {
if (skip) {
print
next
}
in_hunk = 1
# @@ -1,3 +1,4 @@:
# 1: line number in old file
# 3: how many lines the hunk covers in old file
# 1: line number in new file
# 4: how many lines the hunk covers in new file
match($0, /^@@ -([0-9]+)(,([0-9]+))? \+([0-9]+)(,([0-9]+))? @@/, m)
# Set 'cur' to the old file's line number at the start of the hunk. It
# gets incremented for every context line and every line removal, so
# that it always represents the old file's current line number.
cur = m[1]
# last = last line number of current hunk
last = cur + (m[3] ? m[3] : 1) - 1
need_line_directive = 0
print
next
}
{
if (skip || !in_hunk || $0 ~ /^\\ No newline at end of file/) {
print
next
}
# change line
if ($0 ~ /^[+-]/) {
# inject #line after this group of changes
need_line_directive = 1
if ($0 ~ /^-/)
cur++
print
next
}
# If this is the first context line after a group of changes, inject
# the #line directive to force the compiler to correct the line
# numbering to match the original file.
if (need_line_directive) {
print "+#line " cur
need_line_directive = 0
}
if (cur == last)
in_hunk = 0
cur++
print
}