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efbcadeca7
Currently we use "quotearg" to escape the strings output in Dot. As a
result, if the user's locale is C for instance, all the non-ASCII are
escaped. Unfortunately graphviz does not interpret this style of
escaping.
For instance:
5 -> 2 [style=solid label="\"\303\221\303\271\341\271\203\303\251\342\204\235\303\264\""]
was displayed as a sequence of numbers. We now output:
5 -> 2 [style=solid label="\"Ñùṃéℝô\""]
independently of the user's locale.
* src/system.h (obstack_backslash): New.
* src/graphviz.h, src/graphviz.c (escape): Remove, use
obstack_backslash instead.
* src/print-graph.c: Likewise.
* tests/report.at: Adjust.
67 lines
2.1 KiB
C
67 lines
2.1 KiB
C
/* Output Graphviz specification of a state machine generated by Bison.
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Copyright (C) 2006, 2010-2015, 2018-2020 Free Software Foundation,
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Inc.
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This file is part of Bison, the GNU Compiler Compiler.
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This program is free software: you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation, either version 3 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program. If not, see <http://www.gnu.org/licenses/>. */
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/* Written by Paul Eggert and Satya Kiran Popuri. */
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#ifndef GRAPHVIZ_H_
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# define GRAPHVIZ_H_
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# include "state.h"
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/** Begin a Dot graph.
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*
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* \param fout output stream.
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*/
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void start_graph (FILE *fout);
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/** Output a Dot node.
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*
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* \param id identifier of the node
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* \param label human readable label of the node (no Dot escaping needed).
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* \param fout output stream.
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*/
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void output_node (int id, char const *label, FILE *fout);
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/** Output a Dot edge.
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* \param source id of the source node
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* \param destination id of the target node
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* \param label human readable label of the edge
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* (no Dot escaping needed). Can be 0.
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* \param style Dot style of the edge (e.g., "dotted" or "solid").
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* \param fout output stream.
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*/
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void output_edge (int source, int destination, char const *label,
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char const *style, FILE *fout);
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/** Output a reduction.
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* \param s current state
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* \param reds the set of reductions
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* \param fout output stream.
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*/
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void output_red (state const *s, reductions const *reds, FILE *fout);
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/** End a Dot graph.
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*
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* \param fout output stream.
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*/
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void finish_graph (FILE *fout);
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#endif /* ! GRAPHVIZ_H_ */
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