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4e859e67dd
This patch got accidentally left out when libdiff was imported. The rest of the code (command-line option etc.) was present, just not the part that actually prints ANSI color codes. Sponsored by: Klara, Inc. Reviewed by: kevans Differential Revision: https://reviews.freebsd.org/D46873
116 lines
4.6 KiB
C
116 lines
4.6 KiB
C
/* Diff output generators and invocation shims. */
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/*
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* Copyright (c) 2020 Neels Hofmeyr <neels@hofmeyr.de>
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*
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* Permission to use, copy, modify, and distribute this software for any
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* purpose with or without fee is hereby granted, provided that the above
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* copyright notice and this permission notice appear in all copies.
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*
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* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
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* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
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* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
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* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
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* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
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* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
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* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
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*/
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struct diff_input_info {
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const char *left_path;
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const char *right_path;
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/* Set by caller of diff_output_* functions. */
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int flags;
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#define DIFF_INPUT_LEFT_NONEXISTENT 0x00000001
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#define DIFF_INPUT_RIGHT_NONEXISTENT 0x00000002
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};
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struct diff_output_info {
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/*
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* Byte offset to each line in the generated output file.
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* The total number of lines in the file is line_offsets.len - 1.
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* The last offset in this array corresponds to end-of-file.
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*/
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ARRAYLIST(off_t) line_offsets;
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/*
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* Type (i.e., context, minus, plus) of each line generated by the diff.
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* nb. 0x00 to 0x3b reserved for client-defined line types.
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*/
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ARRAYLIST(uint8_t) line_types;
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#define DIFF_LINE_HUNK 0x3c
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#define DIFF_LINE_MINUS 0x3d
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#define DIFF_LINE_PLUS 0x3e
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#define DIFF_LINE_CONTEXT 0x3f
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#define DIFF_LINE_NONE 0x40 /* binary or no EOF newline msg, etc. */
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};
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void diff_output_info_free(struct diff_output_info *output_info);
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struct diff_chunk_context {
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struct diff_range chunk;
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struct diff_range left, right;
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};
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int diff_output_plain(struct diff_output_info **output_info, FILE *dest,
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const struct diff_input_info *info,
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const struct diff_result *result,
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int hunk_headers_only);
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int diff_output_unidiff(struct diff_output_info **output_info,
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FILE *dest, const struct diff_input_info *info,
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const struct diff_result *result,
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unsigned int context_lines);
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int diff_output_edscript(struct diff_output_info **output_info,
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FILE *dest, const struct diff_input_info *info,
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const struct diff_result *result);
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int diff_chunk_get_left_start(const struct diff_chunk *c,
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const struct diff_result *r,
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int context_lines);
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int diff_chunk_get_left_end(const struct diff_chunk *c,
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const struct diff_result *r,
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int context_lines);
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int diff_chunk_get_right_start(const struct diff_chunk *c,
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const struct diff_result *r,
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int context_lines);
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int diff_chunk_get_right_end(const struct diff_chunk *c,
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const struct diff_result *r,
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int context_lines);
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off_t diff_chunk_get_left_start_pos(const struct diff_chunk *c);
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off_t diff_chunk_get_right_start_pos(const struct diff_chunk *c);
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struct diff_chunk *diff_chunk_get(const struct diff_result *r, int chunk_idx);
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int diff_chunk_get_left_count(struct diff_chunk *c);
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int diff_chunk_get_right_count(struct diff_chunk *c);
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void diff_chunk_context_get(struct diff_chunk_context *cc,
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const struct diff_result *r,
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int chunk_idx, int context_lines);
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void diff_chunk_context_load_change(struct diff_chunk_context *cc,
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int *nchunks_used,
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struct diff_result *result,
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int start_chunk_idx,
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int context_lines);
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struct diff_output_unidiff_state;
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struct diff_output_unidiff_state *diff_output_unidiff_state_alloc(void);
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void diff_output_unidiff_state_reset(struct diff_output_unidiff_state *state);
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void diff_output_unidiff_state_free(struct diff_output_unidiff_state *state);
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int diff_output_unidiff_chunk(struct diff_output_info **output_info, FILE *dest,
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struct diff_output_unidiff_state *state,
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const struct diff_input_info *info,
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const struct diff_result *result,
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const struct diff_chunk_context *cc);
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int diff_output_chunk_left_version(struct diff_output_info **output_info,
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FILE *dest,
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const struct diff_input_info *info,
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const struct diff_result *result,
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const struct diff_chunk_context *cc);
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int diff_output_chunk_right_version(struct diff_output_info **output_info,
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FILE *dest,
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const struct diff_input_info *info,
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const struct diff_result *result,
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const struct diff_chunk_context *cc);
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const char *diff_output_get_label_left(const struct diff_input_info *info);
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const char *diff_output_get_label_right(const struct diff_input_info *info);
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void diff_output_set_colors(bool _color,
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const char *_del_code,
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const char *_add_code);
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