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authorTodd Gamblin <tgamblin@llnl.gov>2020-04-23 12:14:40 -0700
committerGitHub <noreply@github.com>2020-04-23 12:14:40 -0700
commit0c0f11caf681cf8e1405c8579b5dffaec16d360a (patch)
tree09b468e391b8ac1c4e0902fe43c7ad2df0a12e42
parent686f0e21de510a12ee3d6af410448eb405d3e7b6 (diff)
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spack info: allow variants section to be as wide as the terminal (#16254)
The variants table in `spack info` is cramped, as the *widest* it can be is 80 columns. And that's actually only sort of true -- the padding calculation is off, so it still wraps on terminals of size 80 because it comes out *slightly* wider. This change looks at the terminal size and calculates the width of the description column based on it. On larger terminals, the output looks much nicer, and on small terminals, the output no longer wraps. Here's an example for `spack info qmcpack` with 110 columns. Before: Name [Default] Allowed values Description ==================== ==================== ============================== afqmc [off] on, off Install with AFQMC support. NOTE that if used in combination with CUDA, only AFQMC will have CUDA. build_type [Release] Debug, Release, The build type to build RelWithDebInfo complex [off] on, off Build the complex (general twist/k-point) version cuda [off] on, off Build with CUDA After: Name [Default] Allowed values Description ==================== ==================== ======================================================== afqmc [off] on, off Install with AFQMC support. NOTE that if used in combination with CUDA, only AFQMC will have CUDA. build_type [Release] Debug, Release, The build type to build RelWithDebInfo complex [off] on, off Build the complex (general twist/k-point) version cuda [off] on, off Build with CUDA
-rw-r--r--lib/spack/spack/cmd/info.py23
1 files changed, 14 insertions, 9 deletions
diff --git a/lib/spack/spack/cmd/info.py b/lib/spack/spack/cmd/info.py
index f8db9e10cb..fa674317ab 100644
--- a/lib/spack/spack/cmd/info.py
+++ b/lib/spack/spack/cmd/info.py
@@ -8,6 +8,7 @@ from __future__ import print_function
import textwrap
from six.moves import zip_longest
+import llnl.util.tty as tty
import llnl.util.tty.color as color
from llnl.util.tty.colify import colify
@@ -53,11 +54,9 @@ def variant(s):
class VariantFormatter(object):
- def __init__(self, variants, max_widths=(30, 20, 30)):
+ def __init__(self, variants):
self.variants = variants
self.headers = ('Name [Default]', 'Allowed values', 'Description')
- # Set max headers lengths
- self.max_column_widths = max_widths
# Formats
fmt_name = '{0} [{1}]'
@@ -67,7 +66,7 @@ class VariantFormatter(object):
# than that
self.column_widths = [len(x) for x in self.headers]
- # Update according to line lengths
+ # Expand columns based on max line lengths
for k, v in variants.items():
candidate_max_widths = (
len(fmt_name.format(k, self.default(v))), # Name [Default]
@@ -81,12 +80,18 @@ class VariantFormatter(object):
max(self.column_widths[2], candidate_max_widths[2])
)
- # Reduce to at most the maximum allowed
- self.column_widths = (
- min(self.column_widths[0], self.max_column_widths[0]),
- min(self.column_widths[1], self.max_column_widths[1]),
- min(self.column_widths[2], self.max_column_widths[2])
+ # Don't let name or possible values be less than max widths
+ _, cols = tty.terminal_size()
+ max_name = min(self.column_widths[0], 30)
+ max_vals = min(self.column_widths[1], 20)
+
+ # allow the description column to extend as wide as the terminal.
+ max_description = min(
+ self.column_widths[2],
+ # min width 70 cols, 14 cols of margins and column spacing
+ max(cols, 70) - max_name - max_vals - 14,
)
+ self.column_widths = (max_name, max_vals, max_description)
# Compute the format
self.fmt = "%%-%ss%%-%ss%%s" % (