{"header":{"message":"change: decode message, description and timestamp","description":"Introduce bincode.h and scaffold.h. The former is for bincode-specific reading from a data bufer, the latter is for common reusable components (scaffolding) across the project","timestamp":"2022-09-01T21:15:34.736807246Z","authors":[{}]},"hash":"Y26WT3ZFN7KSVXOZ26B5Y2OR4M4VQYQLPMAHPC4O5VIT3ENBISXAC","authors":[{"login":"laumann","key":"AFgzZkD8ARgC21gkkCvxPV5HbL7YDVzgYEhbAxQG7UQY"}],"deps":{"hashes":[["Y26WT3ZFN7KSVXOZ26B5Y2OR4M4VQYQLPMAHPC4O5VIT3ENBISXAC","change: decode message, description and timestamp"],["AA",null],["WMFNGOYTKIZ7L25V3KMJPSWK23DTN6G3ESP6M55YIH6UTHFKL2XAC","change: reduce printed noise, rework some code"],["FB67XX5EGNF45JNAQISW7CBLSLS36F6JEUOBTTPUMVBMOVLGA3VQC","add argument parsing setup"],["X36ICMJNYKJF35ZUEVCCR33JOZPCPZQ6KSGEQI3RZND2P5EDASLQC","Initial import for blake3"],["3NA345CN3HKNUQOWTUMUTINQMFLYATWPO4H74J4AFGEUQKGQYBWQC","Add zstd_seekable + many headers"],["VKLGQREYOZDV46F672RFE5XJO3OEOP4EHTCWZYOJY24HVPQX3L6QC","change: add base32 decode, initial deconstruction of hashed"],["Q7TKZCJP2Z75EICZYKCEZDHKGERSOKZGMTSU3UXETBHTF663T66AC","Add initial support for reading the offsets from a (fixed) change"],["3OHR6ZPHN53SVWJL4GUKKUC223IPXA73UPBFJCM4ENGS27AKHN6AC","make: prettify output"],["B3XLVPNC4COLLC3FUE34Y7HIKTMF6CJZUASZOU3YM2YGPZKJZP7QC","Add ani.c and initial Makefile"],["PEUS54XQ5KJQYAVUYBG5MWLEHIOVPMZ3ANVC7HPQP6JUWWPRDW5AC",""],["RIWSVVASWLJQQTSVRHIIUPENOZWOMHQLZMTQVGJUS2ZUGDPSWWIQC","change: decompress the 'contents' with zstd_seekable"],["OBKF6SIIFFHHY7YWKPPX75N23NAVUD5662DKIHXSSIDPKKXQ5ZDQC","change: decompress the hashed section too"]],"deps":["WMFNGOYTKIZ7L25V3KMJPSWK23DTN6G3ESP6M55YIH6UTHFKL2XAC"],"known":["B3XLVPNC4COLLC3FUE34Y7HIKTMF6CJZUASZOU3YM2YGPZKJZP7QC","FB67XX5EGNF45JNAQISW7CBLSLS36F6JEUOBTTPUMVBMOVLGA3VQC","Q7TKZCJP2Z75EICZYKCEZDHKGERSOKZGMTSU3UXETBHTF663T66AC","3NA345CN3HKNUQOWTUMUTINQMFLYATWPO4H74J4AFGEUQKGQYBWQC","3OHR6ZPHN53SVWJL4GUKKUC223IPXA73UPBFJCM4ENGS27AKHN6AC","X36ICMJNYKJF35ZUEVCCR33JOZPCPZQ6KSGEQI3RZND2P5EDASLQC","VKLGQREYOZDV46F672RFE5XJO3OEOP4EHTCWZYOJY24HVPQX3L6QC"]},"hunks":[{"FileAdd":{"meta":{"basename":"scaffold.h","metadata":0},"context":[{"change":11,"pos":1}],"contents":[{"Add":"#ifndef SCAFFOLD_H"},{"Add":"#define SCAFFOLD_H"},{"Add":""},{"Add":"/* Various scaffolding functions around stdlib functions */"},{"Add":""},{"Add":"void *xmalloc(size_t size);"},{"Add":""},{"Add":"#endif"}]}},{"FileAdd":{"meta":{"basename":"scaffold.c","metadata":0},"context":[{"change":11,"pos":1}],"contents":[{"Add":"#include "},{"Add":"#include "},{"Add":"#include \"scaffold.h\""},{"Add":""},{"Add":"/**"},{"Add":" * Expand to support varargs like a regular printf"},{"Add":" */"},{"Add":"void die(const char *msg)"},{"Add":"{"},{"Add":"\tfprintf(stderr, msg);"},{"Add":"\texit(57);"},{"Add":"}"},{"Add":""},{"Add":"void *"},{"Add":"xmalloc(size_t size)"},{"Add":"{"},{"Add":"\tvoid *ret;"},{"Add":""},{"Add":"\tret = malloc(size);"},{"Add":"\tif (!ret)"},{"Add":"\t\tdie(\"Unable to allocate memory\");"},{"Add":""},{"Add":"\treturn ret;"},{"Add":"}"}]}},{"Replacement":{"inode":{"change":3,"pos":80},"path":"change.h","line":39,"ins":{"up_context":[{"change":3,"pos":173}],"down_context":[{"change":3,"pos":209}],"flag":"BLOCK","start":523,"end":573,"inode":{"change":3,"pos":80}},"del":{"edges":[{"previous":"BLOCK","flag":"BLOCK | DELETED","from":{"change":3,"pos":173},"to":{"change":3,"start":173,"end":209},"introduced_by":3}],"inode":{"change":3,"pos":80}},"ins_contents":[{"Add":"\tvoid *authors;\t\t/* a \"key\"=\"value\" collection */"}],"del_contents":[{"Del":"\tvoid *authors;\t\t/* something... */\n"}]}},{"Edit":{"inode":{"change":3,"pos":1047},"path":"change.c","line":10,"atom":{"NewVertex":{"up_context":[{"change":3,"pos":1192}],"down_context":[{"change":12,"pos":39}],"flag":"BLOCK","start":574,"end":596,"inode":{"change":3,"pos":1047}}},"contents":[{"Add":"#include \"scaffold.h\""}]}},{"Edit":{"inode":{"change":3,"pos":1047},"path":"change.c","line":15,"atom":{"NewVertex":{"up_context":[{"change":3,"pos":711}],"down_context":[{"change":13,"pos":0}],"flag":"BLOCK","start":597,"end":618,"inode":{"change":3,"pos":1047}}},"contents":[{"Add":"#include \"bincode.h\""}]}},{"Edit":{"inode":{"change":3,"pos":1047},"path":"change.c","line":165,"atom":{"NewVertex":{"up_context":[{"change":13,"pos":1172}],"down_context":[{"change":3,"pos":872}],"flag":"BLOCK","start":619,"end":632,"inode":{"change":3,"pos":1047}}},"contents":[{"Add":"\tuint8_t *p;"}]}},{"Edit":{"inode":{"change":3,"pos":1047},"path":"change.c","line":171,"atom":{"NewVertex":{"up_context":[{"change":2,"pos":362}],"down_context":[{"change":12,"pos":2591}],"flag":"BLOCK","start":633,"end":648,"inode":{"change":3,"pos":1047}}},"contents":[{"Add":"\tuint64_t len;"}]}},{"Replacement":{"inode":{"change":3,"pos":1047},"path":"change.c","line":197,"ins":{"up_context":[{"change":3,"pos":1399}],"down_context":[{"change":3,"pos":1399}],"flag":"BLOCK","start":649,"end":1418,"inode":{"change":3,"pos":1047}},"del":{"edges":[{"previous":"BLOCK","flag":"BLOCK | DELETED","from":{"change":3,"pos":1399},"to":{"change":2,"start":792,"end":832},"introduced_by":2}],"inode":{"change":3,"pos":1047}},"ins_contents":[{"Add":""},{"Add":"\tp = buf;"},{"Add":"\tdump_buf(\"hashed\", p, hashed_len);"},{"Add":""},{"Add":"\thashed.version = bincode_getu64(p);"},{"Add":"\tprintf(\"version = %lu\\n\", hashed.version);"},{"Add":"\tp += sizeof(uint64_t);"},{"Add":""},{"Add":"\tlen = bincode_getu64(p);"},{"Add":"\tp += sizeof(uint64_t);"},{"Add":""},{"Add":"\thashed.header.message = bincode_getstr(p, len);"},{"Add":"\tp += len;"},{"Add":"\tprintf(\"message = '%s'\\n\", hashed.header.message);"},{"Add":""},{"Add":"\t/**"},{"Add":"\t * Description! This is like the commit \"body\", and is optional, so we"},{"Add":"\t * have a byte indicating its presence, '0' = None, '1' ="},{"Add":"\t * Some(description)"},{"Add":"\t */"},{"Add":"\tif (*p++) {"},{"Add":"\t\tlen = bincode_getu64(p);"},{"Add":"\t\tp += sizeof(uint64_t);"},{"Add":""},{"Add":"\t\thashed.header.description = bincode_getstr(p, len);"},{"Add":"\t\tp += len;"},{"Add":"\t\tprintf(\"description = '%s'\\n\", hashed.header.description);"},{"Add":"\t} else"},{"Add":"\t\tprintf(\"description = (none)\\n\");"},{"Add":""},{"Add":"\tlen = bincode_getu64(p);"},{"Add":"\tp += sizeof(uint64_t);"}],"del_contents":[{"Del":"\t/* TODO Decode into 'struct hashed' */\n"}]}},{"Edit":{"inode":{"change":3,"pos":1047},"path":"change.c","line":230,"atom":{"NewVertex":{"up_context":[{"change":3,"pos":1400}],"down_context":[{"change":13,"pos":1373}],"flag":"BLOCK","start":1419,"end":1641,"inode":{"change":3,"pos":1047}}},"contents":[{"Add":"\tif (len != 30)"},{"Add":"\t\tprintf(\"warning: timestamp field has unexpected length %lu (expected 30)\\n\", len);"},{"Add":"\thashed.header.timestamp = bincode_getstr(p, len);"},{"Add":"\tp += len;"},{"Add":""},{"Add":"\tprintf(\"timestamp = '%s'\\n\", hashed.header.timestamp);"},{"Add":""},{"Add":""}]}},{"FileAdd":{"meta":{"basename":"bincode.h","metadata":0},"context":[{"change":11,"pos":1}],"contents":[{"Add":"#ifndef BINCODE_H"},{"Add":"#define BINCODE_H"},{"Add":""},{"Add":"/** Requires: */"},{"Add":""},{"Add":"/**"},{"Add":" * Definitions for the bincode encode/decode routines."},{"Add":" *"},{"Add":" * Generally, the idea here is that you open a file, get a file descriptor and"},{"Add":" * use the encode/decode routines to get components read from the fd and and"},{"Add":" * decoded as the type you want."},{"Add":" */"},{"Add":""},{"Add":"/**"},{"Add":" * Some notes regarding the bincode format:"},{"Add":" *"},{"Add":" * Enum types: The order of the variants matter, as the encoding indicates the"},{"Add":" * variant with a u32."},{"Add":" */"},{"Add":"uint16_t bincode_getu16(uint8_t *);"},{"Add":"uint32_t bincode_getu32(uint8_t *);"},{"Add":"uint64_t bincode_getu64(uint8_t *);"},{"Add":""},{"Add":"/**"},{"Add":" * Allocate and return a string of the given length."},{"Add":" *"},{"Add":" * The memory allocated shall be the given length plus one, to hold the"},{"Add":" * terminating zero."},{"Add":" *"},{"Add":" * Returns the allocated string. The caller is responsible for deallocating."},{"Add":" */"},{"Add":"char *bincode_getstr(uint8_t *, size_t);"},{"Add":""},{"Add":"/* void bincode_putu16(uint8_t *, uint16_t); */"},{"Add":"/* void bincode_putu32(uint8_t *, uint32_t); */"},{"Add":"/* void bincode_putu64(uint8_t *, uint64_t); */"},{"Add":""},{"Add":"#endif"}]}},{"FileAdd":{"meta":{"basename":"bincode.c","metadata":0},"context":[{"change":11,"pos":1}],"contents":[{"Add":"#include "},{"Add":"#include "},{"Add":"#include "},{"Add":"#include "},{"Add":"#include \"scaffold.h\""},{"Add":"#include \"bincode.h\""},{"Add":""},{"Add":""},{"Add":"uint16_t"},{"Add":"bincode_getu16(uint8_t *b)"},{"Add":"{"},{"Add":"\treturn (uint16_t)b[1] << 8 | (uint16_t)b[0];"},{"Add":"}"},{"Add":""},{"Add":"uint32_t"},{"Add":"bincode_getu32(uint8_t *b)"},{"Add":"{"},{"Add":"\treturn (uint32_t)b[3] << 24"},{"Add":"\t\t| (uint32_t)b[2] << 16"},{"Add":"\t\t| (uint32_t)b[1] << 8"},{"Add":"\t\t| (uint32_t)b[0];"},{"Add":"}"},{"Add":""},{"Add":"uint64_t"},{"Add":"bincode_getu64(uint8_t *b)"},{"Add":"{"},{"Add":"\treturn (uint64_t)b[7] << 56"},{"Add":"\t\t| (uint64_t)b[6] << 48"},{"Add":"\t\t| (uint64_t)b[5] << 40"},{"Add":"\t\t| (uint64_t)b[4] << 32"},{"Add":"\t\t| (uint64_t)b[3] << 24"},{"Add":"\t\t| (uint64_t)b[2] << 16"},{"Add":"\t\t| (uint64_t)b[1] << 8"},{"Add":"\t\t| (uint64_t)b[0];"},{"Add":"}"},{"Add":""},{"Add":"char *"},{"Add":"bincode_getstr(uint8_t *b, size_t len)"},{"Add":"{"},{"Add":"\tchar *str;"},{"Add":""},{"Add":"\tstr = xmalloc(len + 1);"},{"Add":"\tmemcpy(str, b, len);"},{"Add":"\tstr[len] = '\\0';"},{"Add":""},{"Add":"\treturn str;"},{"Add":"}"}]}},{"Edit":{"inode":{"change":3,"pos":458},"path":"Makefile","line":24,"atom":{"NewVertex":{"up_context":[{"change":3,"pos":3742}],"down_context":[{"change":3,"pos":53469}],"flag":"BLOCK","start":3465,"end":3502,"inode":{"change":3,"pos":458}}},"contents":[{"Add":"OBJS += bincode.o"},{"Add":"OBJS += scaffold.o"}]}},{"Replacement":{"inode":{"change":3,"pos":458},"path":"Makefile","line":33,"ins":{"up_context":[{"change":3,"pos":634}],"down_context":[{"change":3,"pos":53606}],"flag":"BLOCK","start":3503,"end":3527,"inode":{"change":3,"pos":458}},"del":{"edges":[{"previous":"BLOCK","flag":"BLOCK | DELETED","from":{"change":3,"pos":634},"to":{"change":3,"start":95,"end":118},"introduced_by":3}],"inode":{"change":3,"pos":458}},"ins_contents":[{"Add":"\t@printf \" LD\\t%s\\n\" $@"}],"del_contents":[{"Del":"\t@printf \"LD\\t%s\\n\" $@\n"}]}}],"owner":"laumann","repo":"ani","token":"XIBVlzgZixo4piDQTe/7+0f07vDOsOmxCZnS+kDQCDs=","login":null}

…

Dependencies

Change contents