Imporve filter, add render

5 files changed, 690 insertions, 6 deletions

diff --git a/Cargo.lock b/Cargo.lock
index 6d2f3e9..4555e1d 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -3,6 +3,24 @@
 version = 3
 
 [[package]]
+name = "aho-corasick"
+version = "0.7.20"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "cc936419f96fa211c1b9166887b38e5e40b19958e5b895be7c1f93adec7071ac"
+dependencies = [
+ "memchr",
+]
+
+[[package]]
+name = "aho-corasick"
+version = "1.0.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "43f6cb1bf222025340178f382c426f13757b2960e89779dfcb319c32542a5a41"
+dependencies = [
+ "memchr",
+]
+
+[[package]]
 name = "android-tzdata"
 version = "0.1.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
@@ -104,6 +122,25 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "bef38d45163c2f1dde094a7dfd33ccf595c92905c8f8f4fdc18d06fb1037718a"
 
 [[package]]
+name = "block-buffer"
+version = "0.10.4"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "3078c7629b62d3f0439517fa394996acacc5cbc91c5a20d8c658e77abd503a71"
+dependencies = [
+ "generic-array",
+]
+
+[[package]]
+name = "bstr"
+version = "1.5.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "a246e68bb43f6cd9db24bea052a53e40405417c5fb372e3d1a8a7f770a564ef5"
+dependencies = [
+ "memchr",
+ "serde",
+]
+
+[[package]]
 name = "bumpalo"
 version = "3.13.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
@@ -143,6 +180,28 @@ dependencies = [
 ]
 
 [[package]]
+name = "chrono-tz"
+version = "0.6.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "58549f1842da3080ce63002102d5bc954c7bc843d4f47818e642abdc36253552"
+dependencies = [
+ "chrono",
+ "chrono-tz-build",
+ "phf",
+]
+
+[[package]]
+name = "chrono-tz-build"
+version = "0.0.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "db058d493fb2f65f41861bfed7e3fe6335264a9f0f92710cab5bdf01fef09069"
+dependencies = [
+ "parse-zoneinfo",
+ "phf",
+ "phf_codegen",
+]
+
+[[package]]
 name = "clap"
 version = "4.3.4"
 source = "registry+https://github.com/rust-lang/crates.io-index"
@@ -207,6 +266,25 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "e496a50fda8aacccc86d7529e2c1e0892dbd0f898a6b5645b5561b89c3210efa"
 
 [[package]]
+name = "cpufeatures"
+version = "0.2.8"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "03e69e28e9f7f77debdedbaafa2866e1de9ba56df55a8bd7cfc724c25a09987c"
+dependencies = [
+ "libc",
+]
+
+[[package]]
+name = "crypto-common"
+version = "0.1.6"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "1bfb12502f3fc46cca1bb51ac28df9d618d813cdc3d2f25b9fe775a34af26bb3"
+dependencies = [
+ "generic-array",
+ "typenum",
+]
+
+[[package]]
 name = "darling"
 version = "0.14.4"
 source = "registry+https://github.com/rust-lang/crates.io-index"
@@ -273,6 +351,22 @@ dependencies = [
 ]
 
 [[package]]
+name = "deunicode"
+version = "0.4.3"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "850878694b7933ca4c9569d30a34b55031b9b139ee1fc7b94a527c4ef960d690"
+
+[[package]]
+name = "digest"
+version = "0.10.7"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "9ed9a281f7bc9b7576e61468ba615a66a5c8cfdff42420a70aa82701a3b1e292"
+dependencies = [
+ "block-buffer",
+ "crypto-common",
+]
+
+[[package]]
 name = "diligent-date-parser"
 version = "0.1.4"
 source = "registry+https://github.com/rust-lang/crates.io-index"
@@ -390,6 +484,51 @@ dependencies = [
 ]
 
 [[package]]
+name = "generic-array"
+version = "0.14.7"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "85649ca51fd72272d7821adaf274ad91c288277713d9c18820d8499a7ff69e9a"
+dependencies = [
+ "typenum",
+ "version_check",
+]
+
+[[package]]
+name = "getrandom"
+version = "0.2.10"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "be4136b2a15dd319360be1c07d9933517ccf0be8f16bf62a3bee4f0d618df427"
+dependencies = [
+ "cfg-if",
+ "libc",
+ "wasi 0.11.0+wasi-snapshot-preview1",
+]
+
+[[package]]
+name = "globset"
+version = "0.4.10"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "029d74589adefde59de1a0c4f4732695c32805624aec7b68d91503d4dba79afc"
+dependencies = [
+ "aho-corasick 0.7.20",
+ "bstr",
+ "fnv",
+ "log",
+ "regex",
+]
+
+[[package]]
+name = "globwalk"
+version = "0.8.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "93e3af942408868f6934a7b85134a3230832b9977cf66125df2f9edcfce4ddcc"
+dependencies = [
+ "bitflags",
+ "ignore",
+ "walkdir",
+]
+
+[[package]]
 name = "h2"
 version = "0.3.19"
 source = "registry+https://github.com/rust-lang/crates.io-index"
@@ -470,6 +609,15 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "c4a1e36c821dbe04574f602848a19f742f4fb3c98d40449f11bcad18d6b17421"
 
 [[package]]
+name = "humansize"
+version = "2.1.3"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "6cb51c9a029ddc91b07a787f1d86b53ccfa49b0e86688c946ebe8d3555685dd7"
+dependencies = [
+ "libm",
+]
+
+[[package]]
 name = "hyper"
 version = "0.14.26"
 source = "registry+https://github.com/rust-lang/crates.io-index"
@@ -546,6 +694,23 @@ dependencies = [
 ]
 
 [[package]]
+name = "ignore"
+version = "0.4.20"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "dbe7873dab538a9a44ad79ede1faf5f30d49f9a5c883ddbab48bce81b64b7492"
+dependencies = [
+ "globset",
+ "lazy_static",
+ "log",
+ "memchr",
+ "regex",
+ "same-file",
+ "thread_local",
+ "walkdir",
+ "winapi-util",
+]
+
+[[package]]
 name = "indexmap"
 version = "1.9.3"
 source = "registry+https://github.com/rust-lang/crates.io-index"
@@ -621,6 +786,12 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "f92be4933c13fd498862a9e02a3055f8a8d9c039ce33db97306fd5a6caa7f29b"
 
 [[package]]
+name = "libm"
+version = "0.2.7"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "f7012b1bbb0719e1097c47611d3898568c546d597c2e74d66f6087edd5233ff4"
+
+[[package]]
 name = "linux-raw-sys"
 version = "0.3.8"
 source = "registry+https://github.com/rust-lang/crates.io-index"
@@ -749,12 +920,104 @@ dependencies = [
 ]
 
 [[package]]
+name = "parse-zoneinfo"
+version = "0.3.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "c705f256449c60da65e11ff6626e0c16a0a0b96aaa348de61376b249bc340f41"
+dependencies = [
+ "regex",
+]
+
+[[package]]
 name = "percent-encoding"
 version = "2.3.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "9b2a4787296e9989611394c33f193f676704af1686e70b8f8033ab5ba9a35a94"
 
 [[package]]
+name = "pest"
+version = "2.7.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "f73935e4d55e2abf7f130186537b19e7a4abc886a0252380b59248af473a3fc9"
+dependencies = [
+ "thiserror",
+ "ucd-trie",
+]
+
+[[package]]
+name = "pest_derive"
+version = "2.7.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "aef623c9bbfa0eedf5a0efba11a5ee83209c326653ca31ff019bec3a95bfff2b"
+dependencies = [
+ "pest",
+ "pest_generator",
+]
+
+[[package]]
+name = "pest_generator"
+version = "2.7.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "b3e8cba4ec22bada7fc55ffe51e2deb6a0e0db2d0b7ab0b103acc80d2510c190"
+dependencies = [
+ "pest",
+ "pest_meta",
+ "proc-macro2",
+ "quote",
+ "syn 2.0.18",
+]
+
+[[package]]
+name = "pest_meta"
+version = "2.7.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "a01f71cb40bd8bb94232df14b946909e14660e33fc05db3e50ae2a82d7ea0ca0"
+dependencies = [
+ "once_cell",
+ "pest",
+ "sha2",
+]
+
+[[package]]
+name = "phf"
+version = "0.10.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "fabbf1ead8a5bcbc20f5f8b939ee3f5b0f6f281b6ad3468b84656b658b455259"
+dependencies = [
+ "phf_shared",
+]
+
+[[package]]
+name = "phf_codegen"
+version = "0.10.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "4fb1c3a8bc4dd4e5cfce29b44ffc14bedd2ee294559a294e2a4d4c9e9a6a13cd"
+dependencies = [
+ "phf_generator",
+ "phf_shared",
+]
+
+[[package]]
+name = "phf_generator"
+version = "0.10.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "5d5285893bb5eb82e6aaf5d59ee909a06a16737a8970984dd7746ba9283498d6"
+dependencies = [
+ "phf_shared",
+ "rand",
+]
+
+[[package]]
+name = "phf_shared"
+version = "0.10.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "b6796ad771acdc0123d2a88dc428b5e38ef24456743ddb1744ed628f9815c096"
+dependencies = [
+ "siphasher",
+ "uncased",
+]
+
+[[package]]
 name = "pin-project-lite"
 version = "0.2.9"
 source = "registry+https://github.com/rust-lang/crates.io-index"
@@ -773,6 +1036,12 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "26072860ba924cbfa98ea39c8c19b4dd6a4a25423dbdf219c1eca91aa0cf6964"
 
 [[package]]
+name = "ppv-lite86"
+version = "0.2.17"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "5b40af805b3121feab8a3c29f04d8ad262fa8e0561883e7653e024ae4479e6de"
+
+[[package]]
 name = "proc-macro2"
 version = "1.0.60"
 source = "registry+https://github.com/rust-lang/crates.io-index"
@@ -801,6 +1070,36 @@ dependencies = [
 ]
 
 [[package]]
+name = "rand"
+version = "0.8.5"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "34af8d1a0e25924bc5b7c43c079c942339d8f0a8b57c39049bef581b46327404"
+dependencies = [
+ "libc",
+ "rand_chacha",
+ "rand_core",
+]
+
+[[package]]
+name = "rand_chacha"
+version = "0.3.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "e6c10a63a0fa32252be49d21e7709d4d4baf8d231c2dbce1eaa8141b9b127d88"
+dependencies = [
+ "ppv-lite86",
+ "rand_core",
+]
+
+[[package]]
+name = "rand_core"
+version = "0.6.4"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "ec0be4795e2f6a28069bec0b5ff3e2ac9bafc99e6a9a7dc3547996c5c816922c"
+dependencies = [
+ "getrandom",
+]
+
+[[package]]
 name = "redox_syscall"
 version = "0.3.5"
 source = "registry+https://github.com/rust-lang/crates.io-index"
@@ -810,6 +1109,23 @@ dependencies = [
 ]
 
 [[package]]
+name = "regex"
+version = "1.8.4"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "d0ab3ca65655bb1e41f2a8c8cd662eb4fb035e67c3f78da1d61dffe89d07300f"
+dependencies = [
+ "aho-corasick 1.0.2",
+ "memchr",
+ "regex-syntax",
+]
+
+[[package]]
+name = "regex-syntax"
+version = "0.7.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "436b050e76ed2903236f032a59761c1eb99e1b0aead2c257922771dab1fc8c78"
+
+[[package]]
 name = "reqwest"
 version = "0.11.18"
 source = "registry+https://github.com/rust-lang/crates.io-index"
@@ -853,8 +1169,10 @@ dependencies = [
  "anyhow",
  "chrono",
  "clap",
+ "regex",
  "reqwest",
  "rss 2.0.4",
+ "tera",
  "tokio",
 ]
 
@@ -868,6 +1186,7 @@ dependencies = [
  "derive_builder",
  "never",
  "quick-xml",
+ "serde",
 ]
 
 [[package]]
@@ -891,6 +1210,15 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "f91339c0467de62360649f8d3e185ca8de4224ff281f66000de5eb2a77a79041"
 
 [[package]]
+name = "same-file"
+version = "1.0.6"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "93fc1dc3aaa9bfed95e02e6eadabb4baf7e3078b0bd1b4d7b6b0b68378900502"
+dependencies = [
+ "winapi-util",
+]
+
+[[package]]
 name = "schannel"
 version = "0.1.21"
 source = "registry+https://github.com/rust-lang/crates.io-index"
@@ -927,6 +1255,20 @@ name = "serde"
 version = "1.0.164"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "9e8c8cf938e98f769bc164923b06dce91cea1751522f46f8466461af04c9027d"
+dependencies = [
+ "serde_derive",
+]
+
+[[package]]
+name = "serde_derive"
+version = "1.0.164"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "d9735b638ccc51c28bf6914d90a2e9725b377144fc612c49a611fddd1b631d68"
+dependencies = [
+ "proc-macro2",
+ "quote",
+ "syn 2.0.18",
+]
 
 [[package]]
 name = "serde_json"
@@ -952,6 +1294,23 @@ dependencies = [
 ]
 
 [[package]]
+name = "sha2"
+version = "0.10.7"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "479fb9d862239e610720565ca91403019f2f00410f1864c5aa7479b950a76ed8"
+dependencies = [
+ "cfg-if",
+ "cpufeatures",
+ "digest",
+]
+
+[[package]]
+name = "siphasher"
+version = "0.3.10"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "7bd3e3206899af3f8b12af284fafc038cc1dc2b41d1b89dd17297221c5d225de"
+
+[[package]]
 name = "slab"
 version = "0.4.8"
 source = "registry+https://github.com/rust-lang/crates.io-index"
@@ -961,6 +1320,15 @@ dependencies = [
 ]
 
 [[package]]
+name = "slug"
+version = "0.1.4"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "b3bc762e6a4b6c6fcaade73e77f9ebc6991b676f88bb2358bddb56560f073373"
+dependencies = [
+ "deunicode",
+]
+
+[[package]]
 name = "socket2"
 version = "0.4.9"
 source = "registry+https://github.com/rust-lang/crates.io-index"
@@ -1013,6 +1381,58 @@ dependencies = [
 ]
 
 [[package]]
+name = "tera"
+version = "1.19.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "a5ab29bb4f3e256ae6ad5c3e2775aa1f8829f2c0c101fc407bfd3a6df15c60c5"
+dependencies = [
+ "chrono",
+ "chrono-tz",
+ "globwalk",
+ "humansize",
+ "lazy_static",
+ "percent-encoding",
+ "pest",
+ "pest_derive",
+ "rand",
+ "regex",
+ "serde",
+ "serde_json",
+ "slug",
+ "thread_local",
+ "unic-segment",
+]
+
+[[package]]
+name = "thiserror"
+version = "1.0.40"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "978c9a314bd8dc99be594bc3c175faaa9794be04a5a5e153caba6915336cebac"
+dependencies = [
+ "thiserror-impl",
+]
+
+[[package]]
+name = "thiserror-impl"
+version = "1.0.40"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "f9456a42c5b0d803c8cd86e73dd7cc9edd429499f37a3550d286d5e86720569f"
+dependencies = [
+ "proc-macro2",
+ "quote",
+ "syn 2.0.18",
+]
+
+[[package]]
+name = "thread_local"
+version = "1.1.4"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "5516c27b78311c50bf42c071425c560ac799b11c30b31f87e3081965fe5e0180"
+dependencies = [
+ "once_cell",
+]
+
+[[package]]
 name = "time"
 version = "0.1.45"
 source = "registry+https://github.com/rust-lang/crates.io-index"
@@ -1123,6 +1543,77 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "3528ecfd12c466c6f163363caf2d02a71161dd5e1cc6ae7b34207ea2d42d81ed"
 
 [[package]]
+name = "typenum"
+version = "1.16.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "497961ef93d974e23eb6f433eb5fe1b7930b659f06d12dec6fc44a8f554c0bba"
+
+[[package]]
+name = "ucd-trie"
+version = "0.1.5"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "9e79c4d996edb816c91e4308506774452e55e95c3c9de07b6729e17e15a5ef81"
+
+[[package]]
+name = "uncased"
+version = "0.9.9"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "9b9bc53168a4be7402ab86c3aad243a84dd7381d09be0eddc81280c1da95ca68"
+dependencies = [
+ "version_check",
+]
+
+[[package]]
+name = "unic-char-property"
+version = "0.9.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "a8c57a407d9b6fa02b4795eb81c5b6652060a15a7903ea981f3d723e6c0be221"
+dependencies = [
+ "unic-char-range",
+]
+
+[[package]]
+name = "unic-char-range"
+version = "0.9.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "0398022d5f700414f6b899e10b8348231abf9173fa93144cbc1a43b9793c1fbc"
+
+[[package]]
+name = "unic-common"
+version = "0.9.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "80d7ff825a6a654ee85a63e80f92f054f904f21e7d12da4e22f9834a4aaa35bc"
+
+[[package]]
+name = "unic-segment"
+version = "0.9.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "e4ed5d26be57f84f176157270c112ef57b86debac9cd21daaabbe56db0f88f23"
+dependencies = [
+ "unic-ucd-segment",
+]
+
+[[package]]
+name = "unic-ucd-segment"
+version = "0.9.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "2079c122a62205b421f499da10f3ee0f7697f012f55b675e002483c73ea34700"
+dependencies = [
+ "unic-char-property",
+ "unic-char-range",
+ "unic-ucd-version",
+]
+
+[[package]]
+name = "unic-ucd-version"
+version = "0.9.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "96bd2f2237fe450fcd0a1d2f5f4e91711124f7857ba2e964247776ebeeb7b0c4"
+dependencies = [
+ "unic-common",
+]
+
+[[package]]
 name = "unicode-bidi"
 version = "0.3.13"
 source = "registry+https://github.com/rust-lang/crates.io-index"
@@ -1167,6 +1658,22 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "accd4ea62f7bb7a82fe23066fb0957d48ef677f6eeb8215f372f52e48bb32426"
 
 [[package]]
+name = "version_check"
+version = "0.9.4"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "49874b5167b65d7193b8aba1567f5c7d93d001cafc34600cee003eda787e483f"
+
+[[package]]
+name = "walkdir"
+version = "2.3.3"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "36df944cda56c7d8d8b7496af378e6b16de9284591917d307c9b4d313c44e698"
+dependencies = [
+ "same-file",
+ "winapi-util",
+]
+
+[[package]]
 name = "want"
 version = "0.3.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
@@ -1281,6 +1788,15 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "ac3b87c63620426dd9b991e5ce0329eff545bccbbb34f3be09ff6fb6ab51b7b6"
 
 [[package]]
+name = "winapi-util"
+version = "0.1.5"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "70ec6ce85bb158151cae5e5c87f95a8e97d2c0c4b001223f33a334e3ce5de178"
+dependencies = [
+ "winapi",
+]
+
+[[package]]
 name = "winapi-x86_64-pc-windows-gnu"
 version = "0.4.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
diff --git a/Cargo.toml b/Cargo.toml
index 06007b2..f9be050 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -10,6 +10,8 @@ edition = "2021"
 anyhow = "1.0.71"
 chrono = "0.4.26"
 clap = { version = "4.3.4", features = ["derive"] }
+regex = "1.8.4"
 reqwest = "0.11.18"
-rss = "2.0.4"
+rss = { version = "2.0.4", features = ["serde"] }
+tera = "1.19.0"
 tokio = { version = "1.28.2", features = ["macros", "rt-multi-thread"] }
diff --git a/src/filter.rs b/src/filter.rs
new file mode 100644
index 0000000..c1c00b1
--- /dev/null
+++ b/src/filter.rs
@@ -0,0 +1,82 @@
+use anyhow::{Result, Context};
+use rss::Channel;
+use regex::Regex;
+use chrono::{DateTime, Datelike, NaiveDate};
+
+pub fn run(c: Channel, regex: bool, invert_match: bool, url: Option<String>, title: Option<String>, date: Option<String>) -> Result<Channel> {
+    let invalid_date = NaiveDate::parse_from_str("1970-01-01", "%Y-%m-%d")?.and_hms_opt(0, 0, 0).unwrap();
+
+    let mut new_channel = c.clone();
+    let filter_date = match &date {
+        Some(date) => {
+            NaiveDate::parse_from_str(&date, "%Y-%m-%d").context("invalid date")?.and_hms_opt(0, 0, 0).unwrap()
+        },
+        None => {
+            invalid_date
+        }
+    };
+
+    new_channel.items = c.items.iter().filter(|&e| {
+        let mut url_ok = true; 
+        if let Some(url) = &url {
+            match &e.link {
+                Some(link) => {
+                    if !do_match(regex, link, url) {
+                        url_ok = false;
+                    }
+                },
+                None => {
+                    url_ok = false;
+                }
+            }
+        }
+
+        let mut title_ok = true; 
+        if let Some(title) = &title {
+            match &e.title {
+                Some(feed_title) => {
+                    if !do_match(regex, feed_title, title) {
+                        title_ok = false;
+                    }
+                },
+                None => {
+                    title_ok = false;
+                }
+            }
+        }
+
+        let mut date_ok = true;
+        if filter_date.timestamp() != invalid_date.timestamp() {
+            let pub_date = DateTime::parse_from_rfc2822(&e.pub_date.as_ref().unwrap()).unwrap();
+
+            if pub_date.year() != filter_date.year() || pub_date.month() != filter_date.month() || pub_date.day() != filter_date.day() {
+                date_ok = false;
+            }
+        }
+
+        let mut ok = url_ok && title_ok && date_ok;
+        if invert_match {
+            ok = !ok;
+        }
+
+        return ok;
+    }).cloned().collect();
+
+    Ok(new_channel)
+}
+
+fn do_match(is_regex: bool, haystack: &String, needle: &String) -> bool {
+    if is_regex {
+        return match_regex(haystack, needle);
+    }
+    return match_substr(haystack, needle);
+}
+
+fn match_substr(haystack: &String, needle: &String) -> bool {
+    return haystack.to_lowercase().contains(&needle.to_lowercase());
+}
+
+fn match_regex(haystack: &String, pattern: &String) -> bool {
+    let re = Regex::new(pattern).unwrap();
+    return re.is_match(haystack);
+}
\ No newline at end of file
diff --git a/src/main.rs b/src/main.rs
index 1836aeb..7fa00f7 100644
--- a/src/main.rs
+++ b/src/main.rs
@@ -1,11 +1,13 @@
 use clap::{Subcommand, Parser, ValueEnum};
 use rss::Channel;
 use tokio;
-use std::process::exit;
+use std::{process::exit, io::Write};
 
 mod fetch;
 mod sort;
 mod take;
+mod filter;
+mod render;
 
 #[derive(Parser)]
 struct Args {
@@ -28,7 +30,34 @@ enum Commands {
     },
 
     /// Gets the first N items
-    Take { n: usize }
+    Take { n: usize },
+
+    /// Filters a feed
+    Filter {
+        /// Treat filters as regexes instead of substrings
+        #[arg(short='E', long)]
+        regex: bool,
+
+        /// Only keep non-matching items
+        #[arg(short='v', long)]
+        invert_match: bool,
+
+        #[arg(short, long)]
+        url: Option<String>,
+
+        #[arg(short, long)]
+        title: Option<String>,
+
+        /// RFC-
+        #[arg(long)]
+        date: Option<String>
+    },
+
+    /// Renders a RSS feed using a Tera template
+    Render {
+        /// Path to the template file
+        template: String
+    }
 }
 
 #[derive(Copy, Clone, PartialEq, Eq, PartialOrd, Ord, ValueEnum)]
@@ -80,7 +109,7 @@ async fn main() {
                     }
                 },
                 Err(e) => {
-                    eprintln!("Could not parse RSS: {:?}", e);
+                    eprintln!("sort: could not parse RSS: {:?}", e);
                     exit(1);
                 }
             }
@@ -94,13 +123,53 @@ async fn main() {
                             c.pretty_write_to(std::io::stdout(), b' ', 2).unwrap();
                         }, 
                         Err(e) => {
-                            eprintln!("Error with 'sort': {:?}", e);
+                            eprintln!("Error with 'take': {:?}", e);
+                            exit(1);
+                        }
+                    }
+                },
+                Err(e) => {
+                    eprintln!("take: could not parse RSS: {:?}", e);
+                    exit(1);
+                }
+            }
+        },
+
+        Commands::Filter { regex, invert_match, url, title, date } => {
+            match Channel::read_from(std::io::stdin().lock()) {
+                Ok (c) => {
+                    match filter::run(c, regex, invert_match, url, title, date) {
+                        Ok(c) => {
+                            c.pretty_write_to(std::io::stdout(), b' ', 2).unwrap();
+                        },
+                        Err(e) => {
+                            eprintln!("Error with 'filter': {:?}", e);
+                            exit(1);
+                        }
+                    }
+                },
+                Err(e) => {
+                    eprintln!("filter: could not parse RSS: {:?}", e);
+                    exit(1);
+                }
+            }
+        },
+
+        Commands::Render { template } => {
+            match Channel::read_from(std::io::stdin().lock()) {
+                Ok (c) => {
+                    match render::run(c, template) {
+                        Ok(t) => {
+                            print!("{}", t);
+                        },
+                        Err(e) => {
+                            eprintln!("Error with 'render': {:?}", e);
                             exit(1);
                         }
                     }
                 },
                 Err(e) => {
-                    eprintln!("Could not parse RSS: {:?}", e);
+                    eprintln!("render: could not parse RSS: {:?}", e);
                     exit(1);
                 }
             }
diff --git a/src/render.rs b/src/render.rs
new file mode 100644
index 0000000..dca941f
--- /dev/null
+++ b/src/render.rs
@@ -0,0 +1,15 @@
+use tera::{Tera, Context};
+use anyhow::Result;
+use rss::Channel;
+
+pub fn run(c: Channel, filename: String) -> Result<String> {
+    let mut tera = Tera::default();
+    let mut ctx = Context::new();
+
+    ctx.insert("items", c.items());
+
+    let file_contents = std::fs::read_to_string(filename)?;
+    tera.add_raw_template("template", &file_contents)?;
+
+    Ok(tera.render("template", &ctx)?)
+}
\ No newline at end of file