FilesExpand file tree

master

/

diff_stats.c

Copy path

Blame

More file actions

Blame

More file actions

Latest commit

 

History

History

History

345 lines (278 loc) · 7.73 KB

master

/

diff_stats.c

Copy path

Top

File metadata and controls

• Code
• Blame

345 lines (278 loc) · 7.73 KB

Raw

Copy raw file

Download raw file

Open symbols panel

Edit and raw actions

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

32

33

34

35

36

37

38

39

40

41

42

43

44

45

46

47

48

49

50

51

52

53

54

55

56

57

58

59

60

61

62

63

64

65

66

67

68

69

70

71

72

73

74

75

76

77

78

79

80

81

82

83

84

85

86

87

88

89

90

91

92

93

94

95

96

97

98

99

100

101

102

103

104

105

106

107

108

109

110

111

112

113

114

115

116

117

118

119

120

121

122

123

124

125

126

127

128

129

130

131

132

133

134

135

136

137

138

139

140

141

142

143

144

145

146

147

148

149

150

151

152

153

154

155

156

157

158

159

160

161

162

163

164

165

166

167

168

169

170

171

172

173

174

175

176

177

178

179

180

181

182

183

184

185

186

187

188

189

190

191

192

193

194

195

196

197

198

199

200

201

202

203

204

205

206

207

208

209

210

211

212

213

214

215

216

217

218

219

220

221

222

223

224

225

226

227

228

229

230

231

232

233

234

235

236

237

238

239

240

241

242

243

244

245

246

247

248

249

250

251

252

253

254

255

256

257

258

259

260

261

262

263

264

265

266

267

268

269

270

271

272

273

274

275

276

277

278

279

280

281

282

283

284

285

286

287

288

289

290

291

292

293

294

295

296

297

298

299

300

301

302

303

304

305

306

307

308

309

310

311

312

313

314

315

316

317

318

319

320

321

322

323

324

325

326

327

328

329

330

331

332

333

334

335

336

337

338

339

340

341

342

343

344

345

/*

* Copyright (C) the libgit2 contributors. All rights reserved.

*

* This file is part of libgit2, distributed under the GNU GPL v2 with

* a Linking Exception. For full terms see the included COPYING file.

*/

#include "common.h"

#include "vector.h"

#include "diff.h"

#include "patch_generate.h"

#define DIFF_RENAME_FILE_SEPARATOR " => "

#define STATS_FULL_MIN_SCALE 7

typedef struct {

size_t insertions;

size_t deletions;

} diff_file_stats;

struct git_diff_stats {

git_diff *diff;

diff_file_stats *filestats;

size_t files_changed;

size_t insertions;

size_t deletions;

size_t renames;

size_t max_name;

size_t max_filestat;

int max_digits;

};

static int digits_for_value(size_t val)

{

int count = 1;

size_t placevalue = 10;

while (val >= placevalue) {

++count;

placevalue *= 10;

}

return count;

}

int git_diff_file_stats__full_to_buf(

git_buf *out,

const git_diff_delta *delta,

const diff_file_stats *filestat,

const git_diff_stats *stats,

size_t width)

{

const char *old_path = NULL, *new_path = NULL;

size_t padding, old_size, new_size;

old_path = delta->old_file.path;

new_path = delta->new_file.path;

old_size = delta->old_file.size;

new_size = delta->new_file.size;

if (git_buf_printf(out, " %s", old_path) < 0)

goto on_error;

if (strcmp(old_path, new_path) != 0) {

padding = stats->max_name - strlen(old_path) - strlen(new_path);

if (git_buf_printf(out, DIFF_RENAME_FILE_SEPARATOR "%s", new_path) < 0)

goto on_error;

} else {

padding = stats->max_name - strlen(old_path);

if (stats->renames > 0)

padding += strlen(DIFF_RENAME_FILE_SEPARATOR);

}

if (git_buf_putcn(out, ' ', padding) < 0 ||

git_buf_puts(out, " | ") < 0)

goto on_error;

if (delta->flags & GIT_DIFF_FLAG_BINARY) {

if (git_buf_printf(out,

"Bin %" PRIuZ " -> %" PRIuZ " bytes", old_size, new_size) < 0)

goto on_error;

}

else {

if (git_buf_printf(out,

"%*" PRIuZ, stats->max_digits,

filestat->insertions + filestat->deletions) < 0)

goto on_error;

if (filestat->insertions || filestat->deletions) {

if (git_buf_putc(out, ' ') < 0)

goto on_error;

if (!width) {

if (git_buf_putcn(out, '+', filestat->insertions) < 0 ||

git_buf_putcn(out, '-', filestat->deletions) < 0)

goto on_error;

} else {

size_t total = filestat->insertions + filestat->deletions;

size_t full = (total * width + stats->max_filestat / 2) /

stats->max_filestat;

size_t plus = full * filestat->insertions / total;

size_t minus = full - plus;

if (git_buf_putcn(out, '+', max(plus, 1)) < 0 ||

git_buf_putcn(out, '-', max(minus, 1)) < 0)

goto on_error;

}

}

}

git_buf_putc(out, '\n');

on_error:

return (git_buf_oom(out) ? -1 : 0);

}

int git_diff_file_stats__number_to_buf(

git_buf *out,

const git_diff_delta *delta,

const diff_file_stats *filestats)

{

int error;

const char *path = delta->new_file.path;

if (delta->flags & GIT_DIFF_FLAG_BINARY)

error = git_buf_printf(out, "%-8c" "%-8c" "%s\n", '-', '-', path);

else

error = git_buf_printf(out, "%-8" PRIuZ "%-8" PRIuZ "%s\n",

filestats->insertions, filestats->deletions, path);

return error;

}

int git_diff_file_stats__summary_to_buf(

git_buf *out,

const git_diff_delta *delta)

{

if (delta->old_file.mode != delta->new_file.mode) {

if (delta->old_file.mode == 0) {

git_buf_printf(out, " create mode %06o %s\n",

delta->new_file.mode, delta->new_file.path);

}

else if (delta->new_file.mode == 0) {

git_buf_printf(out, " delete mode %06o %s\n",

delta->old_file.mode, delta->old_file.path);

}

else {

git_buf_printf(out, " mode change %06o => %06o %s\n",

delta->old_file.mode, delta->new_file.mode, delta->new_file.path);

}

}

return 0;

}

int git_diff_get_stats(

git_diff_stats **out,

git_diff *diff)

{

size_t i, deltas;

size_t total_insertions = 0, total_deletions = 0;

git_diff_stats *stats = NULL;

int error = 0;

assert(out && diff);

stats = git__calloc(1, sizeof(git_diff_stats));

GITERR_CHECK_ALLOC(stats);

deltas = git_diff_num_deltas(diff);

stats->filestats = git__calloc(deltas, sizeof(diff_file_stats));

if (!stats->filestats) {

git__free(stats);

return -1;

}

stats->diff = diff;

GIT_REFCOUNT_INC(diff);

for (i = 0; i < deltas && !error; ++i) {

git_patch *patch = NULL;

size_t add = 0, remove = 0, namelen;

const git_diff_delta *delta;

if ((error = git_patch_from_diff(&patch, diff, i)) < 0)

break;

/* keep a count of renames because it will affect formatting */

delta = patch->delta;

/* TODO ugh */

namelen = strlen(delta->new_file.path);

if (strcmp(delta->old_file.path, delta->new_file.path) != 0) {

namelen += strlen(delta->old_file.path);

stats->renames++;

}

/* and, of course, count the line stats */

error = git_patch_line_stats(NULL, &add, &remove, patch);

git_patch_free(patch);

stats->filestats[i].insertions = add;

stats->filestats[i].deletions = remove;

total_insertions += add;

total_deletions += remove;

if (stats->max_name < namelen)

stats->max_name = namelen;

if (stats->max_filestat < add + remove)

stats->max_filestat = add + remove;

}

stats->files_changed = deltas;

stats->insertions = total_insertions;

stats->deletions = total_deletions;

stats->max_digits = digits_for_value(stats->max_filestat + 1);

if (error < 0) {

git_diff_stats_free(stats);

stats = NULL;

}

*out = stats;

return error;

}

size_t git_diff_stats_files_changed(

const git_diff_stats *stats)

{

assert(stats);

return stats->files_changed;

}

size_t git_diff_stats_insertions(

const git_diff_stats *stats)

{

assert(stats);

return stats->insertions;

}

size_t git_diff_stats_deletions(

const git_diff_stats *stats)

{

assert(stats);

return stats->deletions;

}

int git_diff_stats_to_buf(

git_buf *out,

const git_diff_stats *stats,

git_diff_stats_format_t format,

size_t width)

{

int error = 0;

size_t i;

const git_diff_delta *delta;

assert(out && stats);

if (format & GIT_DIFF_STATS_NUMBER) {

for (i = 0; i < stats->files_changed; ++i) {

if ((delta = git_diff_get_delta(stats->diff, i)) == NULL)

continue;

error = git_diff_file_stats__number_to_buf(

out, delta, &stats->filestats[i]);

if (error < 0)

return error;

}

}

if (format & GIT_DIFF_STATS_FULL) {

if (width > 0) {

if (width > stats->max_name + stats->max_digits + 5)

width -= (stats->max_name + stats->max_digits + 5);

if (width < STATS_FULL_MIN_SCALE)

width = STATS_FULL_MIN_SCALE;

}

if (width > stats->max_filestat)

width = 0;

for (i = 0; i < stats->files_changed; ++i) {

if ((delta = git_diff_get_delta(stats->diff, i)) == NULL)

continue;

error = git_diff_file_stats__full_to_buf(

out, delta, &stats->filestats[i], stats, width);

if (error < 0)

return error;

}

}

if (format & GIT_DIFF_STATS_FULL || format & GIT_DIFF_STATS_SHORT) {

git_buf_printf(

out, " %" PRIuZ " file%s changed",

stats->files_changed, stats->files_changed != 1 ? "s" : "");

if (stats->insertions || stats->deletions == 0)

git_buf_printf(

out, ", %" PRIuZ " insertion%s(+)",

stats->insertions, stats->insertions != 1 ? "s" : "");

if (stats->deletions || stats->insertions == 0)

git_buf_printf(

out, ", %" PRIuZ " deletion%s(-)",

stats->deletions, stats->deletions != 1 ? "s" : "");

git_buf_putc(out, '\n');

if (git_buf_oom(out))

return -1;

}

if (format & GIT_DIFF_STATS_INCLUDE_SUMMARY) {

for (i = 0; i < stats->files_changed; ++i) {

if ((delta = git_diff_get_delta(stats->diff, i)) == NULL)

continue;

error = git_diff_file_stats__summary_to_buf(out, delta);

if (error < 0)

return error;

}

}

return error;

}

void git_diff_stats_free(git_diff_stats *stats)

{

if (stats == NULL)

return;

git_diff_free(stats->diff); /* bumped refcount in constructor */

git__free(stats->filestats);

git__free(stats);

}