view contrib/xml.rnc @ 25620:5f87f2305ad0

revset: translate node directly with changelog in 'head'

Using 'repo[X]' is much slower because it creates a 'changectx' object and goes
though multiple layers of code to do so. It is also error prone if there is
tags, bookmarks, branch or other names that could map to a node hash and take
precedence (user are wicked).

This provides a significant performance boost on repository with a lot of
heads.  Benchmark result for a repo with 1181 heads.

revset: head()
   plain         min           last          reverse
0) 0.014853      0.014371      0.014350      0.015161
1) 0.001402   9% 0.000975   6% 0.000874   6% 0.001415   9%

revset: head() - public()
   plain         min           last          reverse
0) 0.015121      0.014420      0.014560      0.015028
1) 0.001674  11% 0.001109   7% 0.000980   6% 0.001693  11%

revset: draft() and head()
   plain         min           last          reverse
0) 0.015976      0.014490      0.014214      0.015892
1) 0.002335  14% 0.001018   7% 0.000887   6% 0.002340  14%

The speed up is visible even when other more costly revset are in use

revset: head() and author("mpm")
   plain         min           last          reverse
0) 0.105419      0.090046      0.017169      0.108180
1) 0.090721  86% 0.077602  86% 0.003556  20% 0.093324  86%

# RelaxNG schema for "xml" log style
# Inspired by Subversion's XML log format.

start = log
node.type = xsd:string  {minLength = "40" maxLength = "40"}

log = element log { logentry+ }
logentry = element logentry {
    logentry.attlist,
    branch*, tag*, hgparent*,
    author, date,
    msg, paths?, copies?, extra*
}
logentry.attlist =
    attribute revision {xsd:nonNegativeInteger}
  & attribute node {node.type}
branch = element branch { text }
tag = element tag { text }
hgparent = element parent {hgparent.attlist, text}
hgparent.attlist =
    attribute revision {xsd:integer {minInclusive = "-1"} }
  & attribute node {node.type}
author = element author { author.attlist, text }
author.attlist =
    attribute email {text}
date = element date {xsd:dateTime}
msg = element msg {msg.attlist, text}
msg.attlist =
    attribute xml:space {"preserve"}
paths = element paths { path* }
path = element path { path.attlist, text }
path.attlist =
    # Action: (A)dd, (M)odify, (R)emove
    attribute action {"A"|"M"|"R"}
copies = element copies { copy+ }
copy = element copy { copy.attlist, text }
copy.attlist =
    attribute source {text}
extra = element extra {extra.attlist, text}
extra.attlist =
    attribute key {text}