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matrix-spec-proposals/templating/matrix_templates/templates/tables.tmpl

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{#
# A set of macros for generating RST tables
#}
{#
# write a table for a list of parameters.
#
# 'rows' is the list of parameters. Each row should have the keys
# 'key', 'type', and 'desc'.
#}
{% macro paramtable(rows, titles=["Parameter", "Type", "Description"]) -%}
{{ split_paramtable({None: rows}, titles) }}
{% endmacro %}
{#
# write a table for the request parameters, split by location.
# 'rows_by_loc' is a map from location to a list of parameters.
#
# As a special case, if a key of 'rows_by_loc' is 'None', no title row is
# written for that location. This is used by the standard 'paramtable' macro.
#}
{% macro split_paramtable(rows_by_loc,
titles=["Parameter", "Type", "Description"]) -%}
{% set rowkeys = ['key', 'type', 'desc'] %}
{% set titlerow = {'key': titles[0], 'type': titles[1], 'desc': titles[2]} %}
{# We need the rows flattened into a single list. Abuse the 'sum' filter to
# join arrays instead of add numbers. -#}
{% set flatrows = rows_by_loc.values()|sum(start=[]) -%}
{# Figure out the widths of the columns. The last column is always 50 characters
# wide; the others default to 10, but stretch if there is wider text in the
# column. -#}
{% set fieldwidths = (([titlerow] + flatrows) |
fieldwidths(rowkeys[0:-1], [10, 10])) + [50] -%}
{{ tableheader(fieldwidths) }}
{{ tablerow(fieldwidths, titlerow, rowkeys) }}
{{ tableheader(fieldwidths) }}
{% for loc in rows_by_loc -%}
{% if loc != None -%}
{{ tablespan(fieldwidths, "*" ~ loc ~ " parameters*") }}
{% endif -%}
{% for row in rows_by_loc[loc] -%}
{{ tablerow(fieldwidths, row, rowkeys) }}
{% endfor -%}
{% endfor -%}
{{ tableheader(fieldwidths) }}
{% endmacro %}
{#
# Write a table header row, for the given column widths
#}
{% macro tableheader(widths) -%}
{% for arg in widths -%}
{{"="*arg}} {% endfor -%}
{% endmacro %}
{#
# Write a normal table row. Each of 'widths' and 'keys' should be sequences
# of the same length; 'widths' defines the column widths, and 'keys' the
# attributes of 'row' to look up for values to put in the columns.
#}
{% macro tablerow(widths, row, keys) -%}
{% for key in keys -%}
{% set value=row[key] -%}
{% if not loop.last -%}
{# the first few columns need space after them -#}
{{ value }}{{" "*(1+widths[loop.index0]-value|length) -}}
{% else -%}
{# the last column needs wrapping and indenting (by the sum of the widths of
the preceding columns, plus the number of preceding columns (for the
separators)) -#}
{{ value | wrap(widths[loop.index0]) |
indent_block(widths[0:-1]|sum + loop.index0) -}}
{% endif -%}
{% endfor -%}
{% endmacro %}
{#
# write a tablespan row. This is a single value which spans the entire table.
#}
{% macro tablespan(widths, value) -%}
{{value}}
{# we write a trailing space to stop the separator being misinterpreted
# as a header line. -#}
{{"-"*(widths|sum + widths|length -1)}} {% endmacro %}