mercurial/revlogutils/debug.py
author Arseniy Alekseyev <aalekseyev@janestreet.com>
Tue, 20 Sep 2022 13:38:07 -0400
branchstable
changeset 49492 b3e77d536b53
parent 49266 da3e37ecacde
child 49659 7c0a383849a8
permissions -rw-r--r--
tests: fix the flaky test test-logtoprocess.t The main change is that we're waiting for the [touched] file to appear for 5 seconds instead of 0.1 seconds. Also, instead of implementing wait-on-file from scratch, we use the existing one from testlib/ that works well.
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# revlogutils/debug.py - utility used for revlog debuging
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#
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# Copyright 2005-2007 Olivia Mackall <olivia@selenic.com>
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# Copyright 2022 Octobus <contact@octobus.net>
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#
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# This software may be used and distributed according to the terms of the
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# GNU General Public License version 2 or any later version.
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from .. import (
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    node as nodemod,
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)
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from . import (
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    constants,
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)
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INDEX_ENTRY_DEBUG_COLUMN = []
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NODE_SIZE = object()
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class _column_base:
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    """constains the definition of a revlog column
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    name:         the column header,
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    value_func:   the function called to get a value,
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    size:         the width of the column,
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    verbose_only: only include the column in verbose mode.
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    """
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    def __init__(self, name, value_func, size=None, verbose=False):
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        self.name = name
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        self.value_func = value_func
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        if size is not NODE_SIZE:
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            if size is None:
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                size = 8  # arbitrary default
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            size = max(len(name), size)
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        self._size = size
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        self.verbose_only = verbose
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    def get_size(self, node_size):
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        if self._size is NODE_SIZE:
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            return node_size
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        else:
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            return self._size
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def debug_column(name, size=None, verbose=False):
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    """decorated function is registered as a column
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    name: the name of the column,
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    size: the expected size of the column.
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    """
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    def register(func):
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        entry = _column_base(
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            name=name,
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            value_func=func,
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            size=size,
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            verbose=verbose,
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        )
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        INDEX_ENTRY_DEBUG_COLUMN.append(entry)
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        return entry
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    return register
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@debug_column(b"rev", size=6)
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def _rev(index, rev, entry, hexfn):
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    return b"%d" % rev
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@debug_column(b"rank", size=6, verbose=True)
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def rank(index, rev, entry, hexfn):
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    return b"%d" % entry[constants.ENTRY_RANK]
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@debug_column(b"linkrev", size=6)
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def _linkrev(index, rev, entry, hexfn):
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    return b"%d" % entry[constants.ENTRY_LINK_REV]
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@debug_column(b"nodeid", size=NODE_SIZE)
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def _nodeid(index, rev, entry, hexfn):
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    return hexfn(entry[constants.ENTRY_NODE_ID])
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@debug_column(b"p1-rev", size=6, verbose=True)
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def _p1_rev(index, rev, entry, hexfn):
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    return b"%d" % entry[constants.ENTRY_PARENT_1]
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@debug_column(b"p1-nodeid", size=NODE_SIZE)
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def _p1_node(index, rev, entry, hexfn):
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    parent = entry[constants.ENTRY_PARENT_1]
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    p_entry = index[parent]
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    return hexfn(p_entry[constants.ENTRY_NODE_ID])
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@debug_column(b"p2-rev", size=6, verbose=True)
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def _p2_rev(index, rev, entry, hexfn):
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    return b"%d" % entry[constants.ENTRY_PARENT_2]
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@debug_column(b"p2-nodeid", size=NODE_SIZE)
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def _p2_node(index, rev, entry, hexfn):
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    parent = entry[constants.ENTRY_PARENT_2]
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    p_entry = index[parent]
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    return hexfn(p_entry[constants.ENTRY_NODE_ID])
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@debug_column(b"full-size", size=20, verbose=True)
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def full_size(index, rev, entry, hexfn):
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    return b"%d" % entry[constants.ENTRY_DATA_UNCOMPRESSED_LENGTH]
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@debug_column(b"delta-base", size=6, verbose=True)
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def delta_base(index, rev, entry, hexfn):
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    return b"%d" % entry[constants.ENTRY_DELTA_BASE]
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   121
49259
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   122
@debug_column(b"flags", size=2, verbose=True)
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   123
def flags(index, rev, entry, hexfn):
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   124
    field = entry[constants.ENTRY_DATA_OFFSET]
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   125
    field &= 0xFFFF
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   126
    return b"%d" % field
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diff changeset
   127
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   128
49260
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parents: 49259
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   129
@debug_column(b"comp-mode", size=4, verbose=True)
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   130
def compression_mode(index, rev, entry, hexfn):
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   131
    return b"%d" % entry[constants.ENTRY_DATA_COMPRESSION_MODE]
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   132
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   133
49261
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   134
@debug_column(b"data-offset", size=20, verbose=True)
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   135
def data_offset(index, rev, entry, hexfn):
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   136
    field = entry[constants.ENTRY_DATA_OFFSET]
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   137
    field >>= 16
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diff changeset
   138
    return b"%d" % field
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diff changeset
   139
7ba8adced391 debugindex: add a `data-offset` column
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   140
49262
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Pierre-Yves DAVID <pierre-yves.david@octobus.net>
parents: 49261
diff changeset
   141
@debug_column(b"chunk-size", size=10, verbose=True)
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diff changeset
   142
def data_chunk_size(index, rev, entry, hexfn):
4c145006b24a debugindex: add a `chunk-size` column
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parents: 49261
diff changeset
   143
    return b"%d" % entry[constants.ENTRY_DATA_COMPRESSED_LENGTH]
4c145006b24a debugindex: add a `chunk-size` column
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parents: 49261
diff changeset
   144
4c145006b24a debugindex: add a `chunk-size` column
Pierre-Yves DAVID <pierre-yves.david@octobus.net>
parents: 49261
diff changeset
   145
49263
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Pierre-Yves DAVID <pierre-yves.david@octobus.net>
parents: 49262
diff changeset
   146
@debug_column(b"sd-comp-mode", size=7, verbose=True)
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parents: 49262
diff changeset
   147
def sidedata_compression_mode(index, rev, entry, hexfn):
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parents: 49262
diff changeset
   148
    compression = entry[constants.ENTRY_SIDEDATA_COMPRESSION_MODE]
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Pierre-Yves DAVID <pierre-yves.david@octobus.net>
parents: 49262
diff changeset
   149
    if compression == constants.COMP_MODE_PLAIN:
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parents: 49262
diff changeset
   150
        return b"plain"
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Pierre-Yves DAVID <pierre-yves.david@octobus.net>
parents: 49262
diff changeset
   151
    elif compression == constants.COMP_MODE_DEFAULT:
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parents: 49262
diff changeset
   152
        return b"default"
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parents: 49262
diff changeset
   153
    elif compression == constants.COMP_MODE_INLINE:
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parents: 49262
diff changeset
   154
        return b"inline"
27583efef74d debugindex: add a `sd-comp-mode` column
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parents: 49262
diff changeset
   155
    else:
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parents: 49262
diff changeset
   156
        return b"%d" % compression
27583efef74d debugindex: add a `sd-comp-mode` column
Pierre-Yves DAVID <pierre-yves.david@octobus.net>
parents: 49262
diff changeset
   157
27583efef74d debugindex: add a `sd-comp-mode` column
Pierre-Yves DAVID <pierre-yves.david@octobus.net>
parents: 49262
diff changeset
   158
49264
e3a267a93711 debugindex: add a `sidedata-offset` column
Pierre-Yves DAVID <pierre-yves.david@octobus.net>
parents: 49263
diff changeset
   159
@debug_column(b"sidedata-offset", size=20, verbose=True)
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parents: 49263
diff changeset
   160
def sidedata_offset(index, rev, entry, hexfn):
e3a267a93711 debugindex: add a `sidedata-offset` column
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parents: 49263
diff changeset
   161
    return b"%d" % entry[constants.ENTRY_SIDEDATA_OFFSET]
e3a267a93711 debugindex: add a `sidedata-offset` column
Pierre-Yves DAVID <pierre-yves.david@octobus.net>
parents: 49263
diff changeset
   162
e3a267a93711 debugindex: add a `sidedata-offset` column
Pierre-Yves DAVID <pierre-yves.david@octobus.net>
parents: 49263
diff changeset
   163
49265
30d2beab8163 debugindex: add a `sd-chunk-size` column
Pierre-Yves DAVID <pierre-yves.david@octobus.net>
parents: 49264
diff changeset
   164
@debug_column(b"sd-chunk-size", size=10, verbose=True)
30d2beab8163 debugindex: add a `sd-chunk-size` column
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parents: 49264
diff changeset
   165
def sidedata_chunk_size(index, rev, entry, hexfn):
30d2beab8163 debugindex: add a `sd-chunk-size` column
Pierre-Yves DAVID <pierre-yves.david@octobus.net>
parents: 49264
diff changeset
   166
    return b"%d" % entry[constants.ENTRY_SIDEDATA_COMPRESSED_LENGTH]
30d2beab8163 debugindex: add a `sd-chunk-size` column
Pierre-Yves DAVID <pierre-yves.david@octobus.net>
parents: 49264
diff changeset
   167
30d2beab8163 debugindex: add a `sd-chunk-size` column
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parents: 49264
diff changeset
   168
49250
61cf3d39fd9e debugindex: move the logic into its own module
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parents:
diff changeset
   169
def debug_index(
61cf3d39fd9e debugindex: move the logic into its own module
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parents:
diff changeset
   170
    ui,
61cf3d39fd9e debugindex: move the logic into its own module
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parents:
diff changeset
   171
    repo,
61cf3d39fd9e debugindex: move the logic into its own module
Pierre-Yves David <pierre-yves.david@octobus.net>
parents:
diff changeset
   172
    formatter,
61cf3d39fd9e debugindex: move the logic into its own module
Pierre-Yves David <pierre-yves.david@octobus.net>
parents:
diff changeset
   173
    revlog,
61cf3d39fd9e debugindex: move the logic into its own module
Pierre-Yves David <pierre-yves.david@octobus.net>
parents:
diff changeset
   174
    full_node,
61cf3d39fd9e debugindex: move the logic into its own module
Pierre-Yves David <pierre-yves.david@octobus.net>
parents:
diff changeset
   175
):
61cf3d39fd9e debugindex: move the logic into its own module
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parents:
diff changeset
   176
    """display index data for a revlog"""
61cf3d39fd9e debugindex: move the logic into its own module
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parents:
diff changeset
   177
    if full_node:
61cf3d39fd9e debugindex: move the logic into its own module
Pierre-Yves David <pierre-yves.david@octobus.net>
parents:
diff changeset
   178
        hexfn = nodemod.hex
61cf3d39fd9e debugindex: move the logic into its own module
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parents:
diff changeset
   179
    else:
61cf3d39fd9e debugindex: move the logic into its own module
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parents:
diff changeset
   180
        hexfn = nodemod.short
61cf3d39fd9e debugindex: move the logic into its own module
Pierre-Yves David <pierre-yves.david@octobus.net>
parents:
diff changeset
   181
61cf3d39fd9e debugindex: move the logic into its own module
Pierre-Yves David <pierre-yves.david@octobus.net>
parents:
diff changeset
   182
    idlen = 12
61cf3d39fd9e debugindex: move the logic into its own module
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parents:
diff changeset
   183
    for i in revlog:
61cf3d39fd9e debugindex: move the logic into its own module
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parents:
diff changeset
   184
        idlen = len(hexfn(revlog.node(i)))
61cf3d39fd9e debugindex: move the logic into its own module
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parents:
diff changeset
   185
        break
61cf3d39fd9e debugindex: move the logic into its own module
Pierre-Yves David <pierre-yves.david@octobus.net>
parents:
diff changeset
   186
61cf3d39fd9e debugindex: move the logic into its own module
Pierre-Yves David <pierre-yves.david@octobus.net>
parents:
diff changeset
   187
    fm = formatter
61cf3d39fd9e debugindex: move the logic into its own module
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parents:
diff changeset
   188
49253
a321304269cf debugindex: move to a flexible column
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parents: 49252
diff changeset
   189
    header_pieces = []
a321304269cf debugindex: move to a flexible column
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parents: 49252
diff changeset
   190
    for column in INDEX_ENTRY_DEBUG_COLUMN:
49254
69983adfed06 debugindex: introduce a concept of "verbose-only" column
Pierre-Yves DAVID <pierre-yves.david@octobus.net>
parents: 49253
diff changeset
   191
        if column.verbose_only and not ui.verbose:
69983adfed06 debugindex: introduce a concept of "verbose-only" column
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parents: 49253
diff changeset
   192
            continue
49253
a321304269cf debugindex: move to a flexible column
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parents: 49252
diff changeset
   193
        size = column.get_size(idlen)
a321304269cf debugindex: move to a flexible column
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parents: 49252
diff changeset
   194
        name = column.name
a321304269cf debugindex: move to a flexible column
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parents: 49252
diff changeset
   195
        header_pieces.append(name.rjust(size))
a321304269cf debugindex: move to a flexible column
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 49252
diff changeset
   196
a321304269cf debugindex: move to a flexible column
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 49252
diff changeset
   197
    fm.plain(b' '.join(header_pieces) + b'\n')
a321304269cf debugindex: move to a flexible column
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 49252
diff changeset
   198
a321304269cf debugindex: move to a flexible column
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 49252
diff changeset
   199
    index = revlog.index
49250
61cf3d39fd9e debugindex: move the logic into its own module
Pierre-Yves David <pierre-yves.david@octobus.net>
parents:
diff changeset
   200
61cf3d39fd9e debugindex: move the logic into its own module
Pierre-Yves David <pierre-yves.david@octobus.net>
parents:
diff changeset
   201
    for rev in revlog:
49253
a321304269cf debugindex: move to a flexible column
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parents: 49252
diff changeset
   202
        fm.startitem()
a321304269cf debugindex: move to a flexible column
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parents: 49252
diff changeset
   203
        entry = index[rev]
a321304269cf debugindex: move to a flexible column
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 49252
diff changeset
   204
        first = True
a321304269cf debugindex: move to a flexible column
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parents: 49252
diff changeset
   205
        for column in INDEX_ENTRY_DEBUG_COLUMN:
49254
69983adfed06 debugindex: introduce a concept of "verbose-only" column
Pierre-Yves DAVID <pierre-yves.david@octobus.net>
parents: 49253
diff changeset
   206
            if column.verbose_only and not ui.verbose:
69983adfed06 debugindex: introduce a concept of "verbose-only" column
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parents: 49253
diff changeset
   207
                continue
49253
a321304269cf debugindex: move to a flexible column
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parents: 49252
diff changeset
   208
            if not first:
a321304269cf debugindex: move to a flexible column
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parents: 49252
diff changeset
   209
                fm.plain(b' ')
a321304269cf debugindex: move to a flexible column
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parents: 49252
diff changeset
   210
            first = False
49250
61cf3d39fd9e debugindex: move the logic into its own module
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parents:
diff changeset
   211
49253
a321304269cf debugindex: move to a flexible column
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diff changeset
   212
            size = column.get_size(idlen)
a321304269cf debugindex: move to a flexible column
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parents: 49252
diff changeset
   213
            value = column.value_func(index, rev, entry, hexfn)
a321304269cf debugindex: move to a flexible column
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parents: 49252
diff changeset
   214
            display = b"%%%ds" % size
a321304269cf debugindex: move to a flexible column
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parents: 49252
diff changeset
   215
            fm.write(column.name, display, value)
49250
61cf3d39fd9e debugindex: move the logic into its own module
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parents:
diff changeset
   216
        fm.plain(b'\n')
61cf3d39fd9e debugindex: move the logic into its own module
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parents:
diff changeset
   217
61cf3d39fd9e debugindex: move the logic into its own module
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parents:
diff changeset
   218
    fm.end()